Question 1

Determine the directional derivative in a given direction Please show your answer to at least 4 decimal places. Suppose that f(a:, y) = say. The directional derivative of f(m, y) in the direction of (1, 4) and at the point (3:, y) = ( 1, 5) is Please show your answer to at least 4 decimal places. Suppose that f(:z:, y) = m3y2. The directional derivative of x, 3;) in the direction of ( 1, 2) and at mm) = and at the point (cc, y) = (2' ' 4) '5 Please show your answers to at least 4 decimal places. Suppose that f(x, y) = x y". The directional derivative of f(x, y) in the direction and at the point (x, y) = (3, 2) is