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Easy Inverse Functions - Higher Maths Fun Notes

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Easy Inverse Functions - Higher Maths Fun Notes

Inverse Functions in Higher Mathematics: A Comprehensive Guide

This guide explores the concept of inverse functions in higher mathematics, covering their definition, properties, and methods for finding them. It provides detailed explanations, examples, and graphical representations to help students understand this crucial topic.

31/08/2022

139

inverse functions
inverse functions reverse the effect of each other
e.q.x
2
we can demonstrate that two functions are inverse functions by

View

Page 2: Advanced Inverse Function Concepts

This page delves deeper into finding inverse functions for more complex equations and explores their graphical representations.

The page begins with an example of finding the inverse of f(x) = √(3x + 1), demonstrating the step-by-step algebraic process.

Another example shows how to find the inverse of g(x) = (x - 3) / (x + 2), which involves more complex algebraic manipulation.

Highlight: A function only has an inverse if it is a one-to-one function, meaning for every input there is exactly one output.

The page concludes with a discussion on graphing inverse functions:

Definition: To find the graph of y = f^(-1)(x), reflect the graph of y = f(x) in the diagonal line y = x.

A visual representation is provided to illustrate this concept, showing the original function and its inverse reflected across the line y = x.

Example: The graph shows how the original function and its inverse are symmetrical about the line y = x.

This comprehensive guide provides students with a solid foundation in understanding and working with inverse functions in higher mathematics.

inverse functions
inverse functions reverse the effect of each other
e.q.x
2
we can demonstrate that two functions are inverse functions by

View

Page 1: Introduction to Inverse Functions

This page introduces the concept of inverse functions and provides methods for identifying and finding them.

Definition: Inverse functions are functions that reverse the effect of each other.

The identity function is used to demonstrate that two functions are inverse functions:

Example: f(g(x)) = g(f(x)) = x

A step-by-step example is provided to show that f(x) = 4x-1 and g(x) = (x+1)/4 are inverse functions.

The page then outlines the algebraic method for finding inverse functions:

  1. Write f(x) as y = ...
  2. Rearrange to make x the subject
  3. Swap x and y
  4. Write as f^(-1)(x) = ...

Highlight: The inverse of f(x) is denoted as f^(-1)(x).

An example is given to find the inverse of f(x) = 5x + 4 and determine its domain.

Vocabulary: Domain refers to the set of possible input values for a function.

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Easy Inverse Functions - Higher Maths Fun Notes

Inverse Functions in Higher Mathematics: A Comprehensive Guide

This guide explores the concept of inverse functions in higher mathematics, covering their definition, properties, and methods for finding them. It provides detailed explanations, examples, and graphical representations to help students understand this crucial topic.

31/08/2022

139

 

S5

 

Maths

5

inverse functions
inverse functions reverse the effect of each other
e.q.x
2
we can demonstrate that two functions are inverse functions by

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Page 2: Advanced Inverse Function Concepts

This page delves deeper into finding inverse functions for more complex equations and explores their graphical representations.

The page begins with an example of finding the inverse of f(x) = √(3x + 1), demonstrating the step-by-step algebraic process.

Another example shows how to find the inverse of g(x) = (x - 3) / (x + 2), which involves more complex algebraic manipulation.

Highlight: A function only has an inverse if it is a one-to-one function, meaning for every input there is exactly one output.

The page concludes with a discussion on graphing inverse functions:

Definition: To find the graph of y = f^(-1)(x), reflect the graph of y = f(x) in the diagonal line y = x.

A visual representation is provided to illustrate this concept, showing the original function and its inverse reflected across the line y = x.

Example: The graph shows how the original function and its inverse are symmetrical about the line y = x.

This comprehensive guide provides students with a solid foundation in understanding and working with inverse functions in higher mathematics.

inverse functions
inverse functions reverse the effect of each other
e.q.x
2
we can demonstrate that two functions are inverse functions by

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Page 1: Introduction to Inverse Functions

This page introduces the concept of inverse functions and provides methods for identifying and finding them.

Definition: Inverse functions are functions that reverse the effect of each other.

The identity function is used to demonstrate that two functions are inverse functions:

Example: f(g(x)) = g(f(x)) = x

A step-by-step example is provided to show that f(x) = 4x-1 and g(x) = (x+1)/4 are inverse functions.

The page then outlines the algebraic method for finding inverse functions:

  1. Write f(x) as y = ...
  2. Rearrange to make x the subject
  3. Swap x and y
  4. Write as f^(-1)(x) = ...

Highlight: The inverse of f(x) is denoted as f^(-1)(x).

An example is given to find the inverse of f(x) = 5x + 4 and determine its domain.

Vocabulary: Domain refers to the set of possible input values for a function.

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

Knowunity is the #1 education app in five European countries

Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.

Ranked #1 Education App

Download in

Google Play

Download in

App Store

Knowunity is the #1 education app in five European countries

4.9+

Average app rating

15 M

Pupils love Knowunity

#1

In education app charts in 12 countries

950 K+

Students have uploaded notes

Still not convinced? See what other students are saying...

iOS User

I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D

Philip, iOS User

The app is very simple and well designed. So far I have always found everything I was looking for :D

Lena, iOS user

I love this app ❤️ I actually use it every time I study.