Find dy/dx of 5x^2 + 2y^3 +8 =17.

As we have to differentiate both x and y, we must use implict differentiation for the y by differentiating it with respect to x (also written as d/dx)

5x-> 10x (multiply the power by the number at the start and take away 1 from the power)

2y3 -> 6y2 . dy/dx (the dot means multiply)

8 -> 0 (a sole constant always differnetiates to 0)

17 -> 0

Therefore the equation now looks like this:

10x + 6y2 . dy/dx = 0

so 6y2 .dy/dx = -10x

so dy/dx = -10x / 6y

AP
Answered by Anish P. Maths tutor

4401 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Why do we need the constant of integration?


A curve has equation y = 20x −x^2 −2x^3 . Find its stationary point(s).


Using trigonometric identities, show that (cos(x) + sin(x))^2=1+sin(2x)


Differentiate y=x^2+4x+12


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences