MYTUTOR SUBJECT ANSWERS

527 views

What's the inverse of the function f=x+2?

If we apply a function and then its inverse, we should get back to where we started. 

Suppose we start with an element x. If we apply f to it, we get to x+2. In order to get back to where we started (i.e. x), we need to subtract 2.

Hence, the inverse of the function f is

f-1=x-2.

Marco G. GCSE Maths tutor, A Level Maths tutor, Mentoring Maths tutor...

1 year ago

Answered by Marco, a GCSE Maths tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

460 SUBJECT SPECIALISTS

£20 /hr

Dan B.

Degree: MPhys Physics (Masters) - Exeter University

Subjects offered:Maths, Physics

Maths
Physics

“Hi I'm Dan and I'm in the first year of a four-year MPhys Physics degree at the University of Exeter. I am very patient and will tailor the sessions' content and pace to suit your individual needs...”

£22 /hr

Sam W.

Degree: Mathematics (Bachelors) - Durham University

Subjects offered:Maths

Maths

“About me Hi! I'm Sam and I'm a second year mathematics student at Durham University.  In terms of my academic background, I achieved an A* at GCSE maths, before going on to study maths and further maths at A level and obtaining a high...”

£30 /hr

James T.

Degree: Economics & Management (Bachelors) - Bristol University

Subjects offered:Maths, Economics

Maths
Economics

“I am currently studying Economics & Management at the University of Bristol, and love working with students of all ages, specialising in Maths and Economics at both A-Level and GCSE. I have been teaching drums and coaching tennis for ...”

About the author

Marco G.

Currently unavailable: for regular students

Degree: MSc Mathematics and Foundations of Computer Science (Masters) - Oxford, Oriel College University

Subjects offered:Maths, Further Mathematics

Maths
Further Mathematics

“Have memorised all the digits of Pi, but still working on their order.Currently enrolled on an MSc in Mathematics and Foundations of Computer Science at Oxford University.The focus of my lessons will be on providing you with the too...”

You may also like...

Posts by Marco

What's the integral of x^2 +3/x, with respect to x?

What's the inverse of the function f=x+2?

Other GCSE Maths questions

How do I find the roots and and coordinates of the vertex of the graph y = 2x^2 + 4x - 8 ?

If (2/3)^n=〖(3/2)〗^2 what is the value of n

Mark wants to borrow money to buy a car. His bank offers him a loan of £5,000 to be payed back over 3 years at 4% compound interest. a) Work out the interest acquired in the 2nd year. b) In total how much will Mark end up paying back the bank?

Find Solution to x^2 + x - 2=0

View GCSE Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok