Question

(1 point) Find all the first and second order partial derivatives of f(x,y)=7sin(2x+y)−2cos(x−y) A. ∂f∂x=fx=∂f∂x=fx= B....

(1 point)

Find all the first and second order partial derivatives of f(x,y)=7sin(2x+y)−2cos(x−y)

A. ∂f∂x=fx=∂f∂x=fx=

B. ∂f∂y=fy=∂f∂y=fy=

C. ∂2f∂x2=fxx=∂2f∂x2=fxx=

D. ∂2f∂y2=fyy=∂2f∂y2=fyy=

E. ∂2f∂x∂y=fyx=∂2f∂x∂y=fyx=

F. ∂2f∂y∂x=fxy=∂2f∂y∂x=fxy=

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