ok i need help with a few questions. i'll post the question first and then what i get as an answer, the first one is the partial derivative with respect to x and the second one with respect to y. these are the even number questions from my textbook and they dont have answers to them so if someone could check them, i would really appreciate it; thanks.(adsbygoogle = window.adsbygoogle || []).push({});

a) z = yln|x|

b) z = x^y

c) z = xy^2/(x^2+y^2)

d) z = arctan(x/y)

a) 1/x, 1

b) yx^(y-1), (x^y)(ln|x|)

c) [(x^2)(x^2+y^2)-xy^2(2s)]/(x^2+y^2)^2,

[(2xy)(x^2+y^2)-st^2(2s)]/(x^2+y^2)^2

d) i dont even know how to do this one.

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# Partial derivatives

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