Question

differenciate u=xy+yz+xz with respect to x​

Answer 1

Answer:

u = xy + yz + xz

Differentiating with respect to x

du/dx = d(xy)/dx + d(yz)/dx + d(xz)/dx

Using Product Rule

du/dx = y*dx/dx + x*dy/dx + y*dz/dx + z*dy/dx + z*dx/dx + x*dz/dx

du/dx = y + ( y + z )*dy/dx + ( y + x )*dz/dx + z