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If x^3+y^3=3a x y , find (dy)/(dx)...

If `x^3+y^3=3a x y` , find `(dy)/(dx)`

A

`(ay-x^(2))/(y^(2)-ax)`

B

`(ay-x^(2))/(ay-y^(2))`

C

`(x^(2)+ay)/(y^(2)+ax)`

D

`(x^(2)+ay)/(ax-y^(2))`

Text Solution

Verified by Experts

The correct Answer is:
A

Given, `x^(3)+y^(3)-3axy=0`
Om differentiating w.r.t. x, we get
`3x^(2)+3y^(2)(dy)/(dx)-3a(x(dy)/(dx)+y)=0`
`rArr 3(x^(2)-ay)+3(dy)/(dx)(y^(2)-ax)=0`
`rArr (dy)/(dx)=(ay-x^(2))/(y^(2)-ax)`
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