Why is the inverse of a gradient -1/x?

Because the value, x and its inverse, -1/x should multiply together to give -1. This is proof that two lines are perpendicular (or having the same magnitude of gradient but opposite signs +/- ).

SR
Answered by Sherin R. Maths tutor

3999 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

By first expanding the brackets, differentiate the equation: y=(4x^4 + 3x)(2x^2 - 9)


Determine the first derivative of the following curve defined by parametric equations x = 20-5t and y = t^5.


A function f is defined by f(x) = x^3 - 3x^2 + 1. i) Write down f'(x). ii) Hence find the co-ordinates of the stationary points of the curve y=f(x).


What is a stationary point and how do I find where they occur and distinguish between them?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences