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Potence in koreni: Pravila in poenostavitve

Potence in koreni so temelj algebre, ki ti bosta pomagala... Show more

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# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Osnove potenc in korenov

Predstavljaj si, da lahko namesto 2×2×2×2 napišeš preprosto 2⁴ - to je potenciranje! Osnova je število, ki ga množiš (v našem primeru 2), eksponent pa ti pove, kolikokrat to narediš 4krat4-krat.

Korenjenje deluje obratno. Če imaš 2⁴ = 16, potem je ⁴√16 = 2. Korenjenec je število pod korenskim znakom, korenski eksponent pa določa stopnjo korena.

Hitri nasvet: Če pri korenu ni napisane številke, je mišljen kvadratni koren (stopnja 2).

Posebej pazi na eksponent 0 - vsako število na ničto potenco je 1 (razen 0⁰, ki ni definiran). To je pravilo, ki ga moraš sprejeti kot dejstvo.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Pravila za računanje s potencami

Te formule so tvoje novo orožje za reševanje nalog! Negativni eksponent pomeni, da narediš obratno vrednost: 3⁻² = 1/3² = 1/9.

Najpomembnejša pravila, ki jih moraš znati na pamet:

  • Množenje: a^m × a^n = a^m+nm+n - eksponente seštej
  • Deljenje: a^m ÷ a^n = a^mnm-n - eksponente odštej
  • Potenciranje potence: ama^m^n = a^(m×n) - eksponente pomnoži

Pozor: Pri množenju potenc z enako osnovo eksponente seštej, ne množij!

Racionalni eksponenti povezujejo potence in korene: a^m/nm/n = ⁿ√ama^m. Primer: 8^(2/3) = ³√(8²) = ³√64 = 4, ali lažje (³√8)² = 2² = 4.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Poenostavljanje korenov in racionalizacija

Delno korenjenje je kot igranje detektiva - iščeš največji popolni kvadrat, ki se skriva v korenjenjcu. Za √72 poiščeš 36 kerje36×2=72ker je 36 × 2 = 72, nato √72 = √(36×2) = 6√2.

Postopek je preprost: razstavi korenjenec na popolni kvadrat krat preostanek, nato "izvleci" kvadrat iz pod korena.

Racionalizacija pomeni, da odstraniš korene iz imenovalca ulomka. To narediš z množenjem z 1 v posebni obliki.

Ključni trik: Za a±√b uporabi konjugiran izraz a∓√b in formulo x+yx+yxyx-y = x²-y².

Primer: 4/(3-√5) = 4(3+√5)/[(3-√5)(3+√5)] = 4(3+√5)/(9-5) = (12+4√5)/4 = 3+√5.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Rešeni primeri za vadbo

Poglejmo primer poenostavljanja: (x²y⁻³)²/(x⁻¹y⁴). Najprej se lotimo oklepaja v števcu - vsak člen posebej potenciraj: (x²)² = x⁴ in (y⁻³)² = y⁻⁶.

Dobimo x⁴y⁻⁶/(x⁻¹y⁴). Zdaj uporabi pravilo za deljenje potenc: x^(4-(-1)) × y^(-6-4) = x⁵y⁻¹⁰.

Končni rezultat brez negativnih eksponentov: x⁵/y¹⁰.

Primer z koreni: √50 + √18 - √8. Vsak koren posebej poenostavi - √50 = 5√2, √18 = 3√2, √8 = 2√2.

Pomembno: Ko imaš enake korene, lahko seštej le koeficiente: 5√2 + 3√2 - 2√2 = 6√2.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Pogoste napake in nasveti

Pozor na predznake! (-3)² = 9, ampak -3² = -9. Oklepaji res štejejo! Prvi izraz pomeni (-3)×(-3), drugi pa -(3×3).

Nikoli ne mešaj pravil za potence. Ko množiš potence z enako osnovo, eksponente seštej. Ko potenciraš potenco, eksponente pomnoži.

Največja past:a+ba+b ≠ √a + √b! Primer: √(9+16) = √25 = 5, ampak √9 + √16 = 3 + 4 = 7. Popolnoma različna rezultata!

Pomembna opomba: Sodi koreni negativnih števil v realnih številih ne obstajajo, lihi pa ja - ³√(-8) = -2.

Za uspešno reševanje nalog si zapomni osnovna pravila in vedno preveri predznake ter oklepaje.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Hiter povzetek za testi

Osnovna pravila za potence:

  • a^m × a^n = a^m+nm+n (seštej eksponente)
  • a^m ÷ a^n = a^mnm-n (odštej eksponente)
  • ama^m^n = a^(m×n) (pomnoži eksponente)
  • a⁰ = 1, a^n-n = 1/a^n

Povezava s koreni: a^m/nm/n = ⁿ√ama^m - tako lahko vsak koren zapišeš kot potenco z ulomljenim eksponentom.

Delno korenjenje: Poišči največji popolni kvadrat ali kub, ki deli korenjenec. Primer: √75 = √(25×3) = 5√3.

Za teste: Pri racionalizaciji si zapomni konjugirane izraze in formulo x+yx+yxyx-y = x²-y².

Racionalizacija: Za √a v imenovalcu množi z √a/√a. Za a±√b uporabi konjugiran izraz a∓√b.



We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content in Matematika

Most popular content

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5

App Store

4.7/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

 

Matematika

182

Updated Mar 21, 2026

6 pages

Potence in koreni: Pravila in poenostavitve

Potence in koreni so temelj algebre, ki ti bosta pomagala poenostavljati zapletene izraze in reševati enačbe. Potenciranje je v bistvu le krajši zapis za večkratno množenje, korenjenje pa je njegova obratna operacija.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Osnove potenc in korenov

Predstavljaj si, da lahko namesto 2×2×2×2 napišeš preprosto 2⁴ - to je potenciranje! Osnova je število, ki ga množiš (v našem primeru 2), eksponent pa ti pove, kolikokrat to narediš 4krat4-krat.

Korenjenje deluje obratno. Če imaš 2⁴ = 16, potem je ⁴√16 = 2. Korenjenec je število pod korenskim znakom, korenski eksponent pa določa stopnjo korena.

Hitri nasvet: Če pri korenu ni napisane številke, je mišljen kvadratni koren (stopnja 2).

Posebej pazi na eksponent 0 - vsako število na ničto potenco je 1 (razen 0⁰, ki ni definiran). To je pravilo, ki ga moraš sprejeti kot dejstvo.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Pravila za računanje s potencami

Te formule so tvoje novo orožje za reševanje nalog! Negativni eksponent pomeni, da narediš obratno vrednost: 3⁻² = 1/3² = 1/9.

Najpomembnejša pravila, ki jih moraš znati na pamet:

  • Množenje: a^m × a^n = a^m+nm+n - eksponente seštej
  • Deljenje: a^m ÷ a^n = a^mnm-n - eksponente odštej
  • Potenciranje potence: ama^m^n = a^(m×n) - eksponente pomnoži

Pozor: Pri množenju potenc z enako osnovo eksponente seštej, ne množij!

Racionalni eksponenti povezujejo potence in korene: a^m/nm/n = ⁿ√ama^m. Primer: 8^(2/3) = ³√(8²) = ³√64 = 4, ali lažje (³√8)² = 2² = 4.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Poenostavljanje korenov in racionalizacija

Delno korenjenje je kot igranje detektiva - iščeš največji popolni kvadrat, ki se skriva v korenjenjcu. Za √72 poiščeš 36 kerje36×2=72ker je 36 × 2 = 72, nato √72 = √(36×2) = 6√2.

Postopek je preprost: razstavi korenjenec na popolni kvadrat krat preostanek, nato "izvleci" kvadrat iz pod korena.

Racionalizacija pomeni, da odstraniš korene iz imenovalca ulomka. To narediš z množenjem z 1 v posebni obliki.

Ključni trik: Za a±√b uporabi konjugiran izraz a∓√b in formulo x+yx+yxyx-y = x²-y².

Primer: 4/(3-√5) = 4(3+√5)/[(3-√5)(3+√5)] = 4(3+√5)/(9-5) = (12+4√5)/4 = 3+√5.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Rešeni primeri za vadbo

Poglejmo primer poenostavljanja: (x²y⁻³)²/(x⁻¹y⁴). Najprej se lotimo oklepaja v števcu - vsak člen posebej potenciraj: (x²)² = x⁴ in (y⁻³)² = y⁻⁶.

Dobimo x⁴y⁻⁶/(x⁻¹y⁴). Zdaj uporabi pravilo za deljenje potenc: x^(4-(-1)) × y^(-6-4) = x⁵y⁻¹⁰.

Končni rezultat brez negativnih eksponentov: x⁵/y¹⁰.

Primer z koreni: √50 + √18 - √8. Vsak koren posebej poenostavi - √50 = 5√2, √18 = 3√2, √8 = 2√2.

Pomembno: Ko imaš enake korene, lahko seštej le koeficiente: 5√2 + 3√2 - 2√2 = 6√2.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Pogoste napake in nasveti

Pozor na predznake! (-3)² = 9, ampak -3² = -9. Oklepaji res štejejo! Prvi izraz pomeni (-3)×(-3), drugi pa -(3×3).

Nikoli ne mešaj pravil za potence. Ko množiš potence z enako osnovo, eksponente seštej. Ko potenciraš potenco, eksponente pomnoži.

Največja past:a+ba+b ≠ √a + √b! Primer: √(9+16) = √25 = 5, ampak √9 + √16 = 3 + 4 = 7. Popolnoma različna rezultata!

Pomembna opomba: Sodi koreni negativnih števil v realnih številih ne obstajajo, lihi pa ja - ³√(-8) = -2.

Za uspešno reševanje nalog si zapomni osnovna pravila in vedno preveri predznake ter oklepaje.

# Potence in koreni

Uvod v potence in korene

Potence in koreni so temeljni del algebre. Potenciranje je v bistvu krajši zapis
za večkratno

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Hiter povzetek za testi

Osnovna pravila za potence:

  • a^m × a^n = a^m+nm+n (seštej eksponente)
  • a^m ÷ a^n = a^mnm-n (odštej eksponente)
  • ama^m^n = a^(m×n) (pomnoži eksponente)
  • a⁰ = 1, a^n-n = 1/a^n

Povezava s koreni: a^m/nm/n = ⁿ√ama^m - tako lahko vsak koren zapišeš kot potenco z ulomljenim eksponentom.

Delno korenjenje: Poišči največji popolni kvadrat ali kub, ki deli korenjenec. Primer: √75 = √(25×3) = 5√3.

Za teste: Pri racionalizaciji si zapomni konjugirane izraze in formulo x+yx+yxyx-y = x²-y².

Racionalizacija: Za √a v imenovalcu množi z √a/√a. Za a±√b uporabi konjugiran izraz a∓√b.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

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Most popular content in Matematika

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Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5

App Store

4.7/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user