Question

Find the gradient at the point:
f(x,y) = x^2y+7xy^3 at (1,2)

Answer 1

alright, take derivative with respect to x

2x y +7 y^3

take derivative with respect to y

x^2+7x 3y^2

put them in vector

<2xy+7y^3,x^2+7x *3y^2>

evaluate at that number

Answer 2

ohhhh i didnt know what to do after i took the dderivatives.

Answer 3

Thanks imran

Answer 4

np