- #1

- 97

- 0

## Homework Statement

Find the directional derivative of f at P in the direction of a

f(x,y)=(x*e^y)-(y*e^x); P(0,0);a=5i-2j

my answer came out to 0

## The Attempt at a Solution

i got the unit vector from p to a, which came out to <5/√(29),-2/√(29))

and also the partial derivatives

i then took the gradient of f and got <0,0>

and then the directional derivative which came out to 0, is this right?