I have the following equation:
z (x y)= 200 + 1/100(x^2 - 4xy + 3y^2)
I need to find the partial derivatives in order to find grad z.
After expanding the brackets out I got the partial derivatives as:
dz/dx = (1/50x - 1/25y)
dz/dy = (1/25x + 3/50y)
Thus giving me grad z as:
(1/50x - 1/25y) + (1/25x + 3/50y)
Is this right?