If z = xn f(y x) then? – McqOptions

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1.	If z = xⁿ f(^y _x) then?
A.	y <sup> z</sup> <sub> x</sub> + x <sup> z</sup> <sub> y</sub> = nz
B.	1/y <sup> z</sup> <sub> x</sub> + 1/x <sup> z</sup> <sub> y</sub> = nz
C.	x <sup> z</sup> <sub> x</sub> + y <sup> z</sup> <sub> y</sub> = nz
D.	1/x <sup> z</sup> <sub> x</sub> + 1/y <sup> z</sup> <sub> y</sub> = nz
Answer» D. 1/x <sup> z</sup> <sub> x</sub> + 1/y <sup> z</sup> <sub> y</sub> = nz

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