Find the directional derivative of f at the given point in the direction indicated by the angle 0. f(x, y) = 3x sin(xy), (4, 0), 0 = л/6 Duf=

Determine whether each of the following statements is true or false, and explain why. The derivative of a sum is the sum of the derivatives.

Determine whether each of the following statements is true or false, and explain why. The derivative of a quotient is the quotient of the derivatives.

Determine whether each of the following statements is true or false, and explain why. The derivative of a product is the product of the derivatives.