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# How would I go about differentiating y+4x=5x^2y^2 Watch

1. I have the answer but I don't know how to get there :/
2. Do you know about implicit differentiation?
3. (Original post by BuuTuu)
I have the answer but I don't know how to get there :/
Have you covered implicit differentiation? Differentiate both sides with respect to x and use the chain rule carefully for the RHS.
4. chain rule and product rule differentiating y functions implicitly.
5. Using your knowledge of implicit differentiation, differentiate both sides, remembering:

By product rule (implicit differentiation):

[f(x)y]'=f(x)y'+yf'(x)

By chain rule (implicit differentiation):

[f(y)]'=f'(y)y'

Then, solve for y' in terms of y and x.

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Updated: April 11, 2013
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