Differentiate the equation y^2 + y = x^3 + 2x

To answer this question you must use implicit differentiation due to there being both x and y terms. Consequently you must differentiate each term individually as you would usually (by multiplying by the power and taking one off the power) but for the y terms due to chain rule the differentiated term must also be multiplied by dy/dx. Consequently the answer becomes: 2y*dy/dx + dy/dx = 3x^2 + 2. The equation must then be rearranged to make dy/dx the subject dy/dx (2y + 1) = 3x^2 + 2 Therefore dy/dx = (3x^2 + 2)/(2y+1)

DW
Answered by Daisy W. Maths tutor

3143 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

If y=3x^3e^x; find dy/dx?


When I try to integrate by parts, I end up in an infinite loop. Why is this, and how do you stop?


Differentiate y=x(e^x)


Integrate 1/(5-2x) for 3≤x≤4


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning