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Let z=xyz = x ^ { y } Then the Differential

Question 67

Multiple Choice

Let z=xyz = x ^ { y } . Then the differential dzd ^ { z } is


A) (yxy1) dx+(yxlnx) dy\left( y x ^ { y - 1 } \right) d x + \left( y ^ { x } \ln x \right) d y
B) (xyx1) dxdx(xylnx) dy\left( x y ^ { x - 1 } \right) d x d x - \left( x ^ { y } \ln x \right) d y
C) (xyx1) dx+(xylnx) dy\left( x y ^ { x - 1 } \right) d x + \left( x ^ { y } \ln x \right) d y
D) (yxy1) dx+(xylnx) dy\left( y x ^ { y - 1 } \right) d x + \left( x ^ { y } \ln x \right) d y
E) (yxy1) dx(xylnx) dy\left( y x ^ { y - 1 } \right) d x - \left( x ^ { y } \ln x \right) d y

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