How to gain an inverse function

Set f(x) = y. Then rearrange your equation to find x on it's own as some function of y. If you have a x term on both the top and bottom of a fraction then you will have to multiply the whole equation through by the denominator. Times out any brackets and collect all x terms on one side of the equation with any other terms on the other side. To make it neater you would then replace all the y's with x's to make the inverse of f(x).

William S. GCSE Maths tutor, A Level Maths tutor

2 years ago

Answered by William, an A Level Maths tutor with MyTutor

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


£20 /hr

Charles W.

Degree: Chemistry (Bachelors) - University College London University

Subjects offered:Maths, Chemistry+ 1 more


“Friendly approachable tutor with well thought out tutorials combined with excellent exam techniques”

£26 /hr

Priya L.

Degree: Economics (Bachelors) - Warwick University

Subjects offered:Maths, Further Mathematics + 1 more

Further Mathematics

“About Me: I recently graduated from the University of Warwick with an Economics degree. I am currently on a gap year before I begin my graduate role as a Management Consultant in October. I decided to tutor because I wanted to spend m...”

£20 /hr

Larry R.

Degree: Mathematics (Bachelors) - Warwick University

Subjects offered:Maths, Further Mathematics

Further Mathematics

“I am a Mathematics student at Warwick University. My enthusiasm for all things mathematical has no bounds and it's not just Maths that interests me but also the way that people learn it.  I am patient and friendly. Over the last few y...”

About the author

£20 /hr

William S.

Degree: Mathematics (Masters) - Durham University

Subjects offered:Maths


“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Other A Level Maths questions

What are the rules for decomposition of partial fractions?

How do I find the angle between 2 vectors?

Differentiate with respect to x: 4(x^3) + 2x

A cup of coffee is cooling down in a room following the equation x = 15 + 70e^(-t/40). Find the rate at which the temperature is decreasing when the coffee cools to 60°C.

View A Level 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