cos (xy) = 1 + sin y

calculus equation implicit differntiation
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1 Answer

cos(xy)=1+sin(y); differentiating wrt x:

-sin(xy)(x(dy/dx)+y)=cos(y)(dy/dx).

This can be expressed:

(-xsin(xy)-cos(y))dy/dx=ysin(xy),

dy/dx=-ysin(xy)/(xsin(xy)+cos(y)).
by Top Rated User (1.1m points)

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