MYTUTOR SUBJECT ANSWERS

480 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

515 SUBJECT SPECIALISTS

£18 /hr

Chris T.

Degree: Mathematics (Bachelors) - Durham University

Subjects offered:Maths

Maths

“Background: Hi, I'm Chris and I'm currently a second year Maths student at the University of Durham. I have always enjoyed the challenge that maths presents, and in particular I get immense satisfaction at being able to convey my thou...”

£20 /hr

Upasana T.

Degree: Medicine (Bachelors) - Birmingham University

Subjects offered:Maths, Latin+ 1 more

Maths
Latin
Biology

“About me: Hi, my name is Upasana Topiwala and I am currently in my third year of medical school at the university of Birmingham. I've taken up tutoring in order to inspire my students to appreciate the importance of science in our liv...”

£18 /hr

Ellie B.

Degree: Mathematics (Masters) - York University

Subjects offered:Maths, Physics+ 1 more

Maths
Physics
Further Mathematics

“I study Maths at York University; I chose York because I loved the lecturers, they made maths fun and easy- that's what I hope to do with all my students!”

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

These are the selling prices of 5 houses in 2007: £145 000, £170 000, £215 000, £90 000, £180 000. Work out the mean selling price.

Make a the subject of the following equation, p=(3a+5)/(4-a)

Solve this quadractic equation: x^2 - 8x + 15 = 0

Solve the equation:

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