MathProblemsBank

2.3.38 Gradient and Directional Derivative

Condition: The function \ (f (x, y) = x^{3} +26 x^{2} y+2 \) at point \ (a (2; 26) \) in the direction of the point \ (26; 2) \) is increasing or decreasing.

Calculation of the Gradient and Derivative in a Given Direction of Function of Several Variables.