2.3.30 Gradient and Directional Derivative
\ (\ underline {\ text {Condition:}} \) Find the gradient of the function \ [f (x, y, z) = \ frac {x^{2} +2 y} {2 y+z} \ text {at point} a (2; 4; 2) \ Text {. } \]
Calculation of the Gradient and Derivative in a Given Direction of Function of Several Variables.