How do you differentiate a^x?

The quick answer is that d/dx a^x = ln(a) * a^x. But why?

Well, let's go through the steps so we can understand why the formula works.

Firstly, a^x can be written as (e^(ln(a)))^x because e^(ln(z)) = z as the natural log (ln) is the inverse of e to the power. Then we can write it as e^(x * ln a) because (a^b)^c = a^(b*c). Then differentiating e^(x * ln a) = ln(a) * a^x!

KM
Answered by Kian M. Maths tutor

138756 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

If n is an integer prove (n+3)^(2)-n^(2) is never even.


Two numbers add to make 1000. What would they have to be to maximise their product?


Use integration by parts to find the integral of x sin(3x)


How to differentiate a bracket raised to a power i.e. chain rule


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