Find rate of change of implicit function. There is a function like that : y/x=a+bx^2+cy^4. I want to find rate of change of y/x. If I find dydx or dx/dy it will give me rate of change of y (or x) respectively to x (or y). But I want to find rate of the change of the dy/dx itself. How can I do it?

dammeym

dammeym

Open question

2022-08-21

Find rate of change of implicit function.
There is a function like that : y x = a + b x 2 + c y 4 . I want to find rate of change of y x . If I find d y d x or d x d y it will give me rate of change of y (or x) respectively to x (or y). But I want to find rate of the change of the d y d x itself. How can I do it?

Answer & Explanation

Carleigh Tate

Carleigh Tate

Beginner2022-08-22Added 8 answers

y = a x + a b x 3 + c x y 4
you need to find y and y , so d.w.r. t. x,
y = a + 3 a b x 2 + c y 4 + 4 c x y 3 y ( 1 4 c x y 3 ) y = a + 3 a b x 2 y = a + 3 a b x 2 1 4 c x y 3 .
Again d.w.r.t. x, to get
y = ( 1 4 c x y 3 ) ( 6 a b c x ) ( a + 3 a b x 2 ) ( 4 c y 3 12 c x y 2 y ) ( 1 4 c x y 3 ) 2

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