Find the directional derivative of the function at the given point in the direction of vectorv.

f(x,y) =1+8x

y

,

(3,16),

v=

8,?6

1U. DETAILS SCALC914.E.514.XP. Find the directional derivative of the function at the given point in the direction of vector v. for, v} = 1 + emf}, (3.16}, v = (e, e)