I need to answer for the following question.

Question

W(x,y,z) = x2 + y + z3

1. dw/dx = dx
2. dw/day = 1
3. dw/dt = 3 z2

Answer 1

 

 

1. ∂w/∂x=2x
2. ∂w/∂y=1
3. ∂w/∂z=3z²

Partial derivatives. Apart from these corrections there doesn’t seem to be anything to answer.