Can you solve this problem.

For the function f(z, y, z) : 8 + 9y + 723 + Gry + 15yz + 15xz + 15 find the gradient at the point (1, 1, 1): Vf(1, 1, 1) = ( Find the directional derivative of f at the point (1, 1, 1) in the direction of the vector (4, 2, 4): Notice that you might need to normalize the vector (4, 2, 4). To find a directional derivative means to find the dervative in the direction of a unit vector in the same direction