Question: A . f ( x , y ) = 4 x 2 8 y 3 gradf ( x , y ) = B . f

A.f(x,y)=4x28y3
gradf(x,y)=
B.f(x,y)=4x2y3
gradf(x,y)=
C.f(x,y,z)=4x28y34z5
gradf(x,y,z)=
D.f(x,y,z)=4x2y3z5
gradf(x,y,z)=
E.f(x,y)=cos2(4x)sin3(8y)
gradf(x,y)=
A . f ( x , y ) = 4 x 2 8 y 3 gradf ( x , y ) = B

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