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Question

Find dydx, if 2x3+2y3+x2+y2+4=sinx

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Solution

2x3+2y3+x2+y2+4=sinx
The given function is an implicit function. Therefore, differentiating with respect to x gives:
6x2+6y2dydx+2x+2ydydx+0=cosx
(6y2+2y)dydx=cosx6x22x
dydx=cosx6x22x6y2+2y

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