Show transcribed image text 4. Consider the function f(x,y) = ye-r and the point P-(0,4). Find a direction vector u for which the directional derivative of f at P is equal to zero. The two possible direction vectors are V17
4. Consider the function f(x,y) = ye-r and the point P-(0,4). Find a direction vector u for which the directional derivative of f at P is equal to zero. The two possible direction vectors are V17





