rosemeneelupidge
rosemeneelupidge rosemeneelupidge
  • 07-08-2016
  • Mathematics
contestada

Find dy/dx by implicit differentiation: 4 cos x sin y = 2

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caylus
caylus caylus
  • 07-08-2016
Hello,

f(x,y)=4cos x sin y-2

@f/@x=-4sin x sin y

@f/@y=4 cos x cos y

dy/dx=-(@f/@x)/(@f/@y)=sin x sin y/(cos x cos y)=tg x * tg y
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