Find dy/dx from the equation 2xy + 3x^2 = 4y

Firstly we must notice that we can differentiate each term separately.

Starting with the 2xy term, we must use the product rule as x and y are two variable that will differentiate. Setting u=2x and v=y and using (uv)'= uv' + vu' we get the term 2y+2xy'.

For the 3x^2 term, we can differentiate as usual to get 6x.

For the 4y term, we can simply differentiate to get 4y'.

Putting this all together we get: 2y+2xy'+6x=4y'.

Finally, rearranging gives dy/dx=(3x+y)/(2-x)

MM
Answered by Murray M. Maths tutor

4802 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

The first term of an arithmetic series is a and the common difference is d. The 12th term is 66.5 and the 19th term is 98. Write down two equations in a and d then solve these simultaneous equations to find a and d.


y = 4x/(x^2+5). a) Find dy/dx, writing your answer as a single fraction in its simplest form. b) Hence find the set of values of x for which dy/dx < 0


Show that x^2 +6x+ 11 can be written as (x+p)^2 +q


Prove cosec2A-cot2A=tanA


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:

© 2026 by IXL Learning