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Mathematics 12 Online
OpenStudy (dramaqueen1201):

Implicit differentiation?

OpenStudy (dramaqueen1201):

The answer is supposed to be (A) which is 4 but I'm getting -4 when i do the calculations.

OpenStudy (dramaqueen1201):

what i did was differentiate with respect to x and y separately, so i got dz/dx = z^2 and dz/dy = -5z then i put the z = 1 and i got dz/dx + dz/dy = -5 where did i go wrong?

OpenStudy (dramaqueen1201):

*dz/dx + dz/dy = -4 typo there!

OpenStudy (mathstudent55):

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