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If 4 x^2+ 4 x + xy = 3 and y( 3 ) = -15

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 find y'( 3 ) by implicit differentiation.?

asked Aug 7, 2014 in PRECALCULUS by anonymous

1 Answer

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The equation image

Differentiate implcitly on each side with respect of x .

image

image

Solve for image

image

Now substitute x  = 3 and y  = -15

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image

image

image

answered Aug 7, 2014 by david Expert
edited Aug 7, 2014 by david

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