MA 265 Midterm: ERG_265_-_Test3 Fall 2015

Directional Derivátivé: Problem 5 Previous Problem List Next (1 point) Find the directional derivative off(x,y) = sin(x + 2y) at the point (-2, 2) in the direction θ = π/4. The gradient of f is: Vf(-2,2) = ( The directional derivative is: Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. Email instructor

3. COMPUTE THE GRADIENT OF THE FUNCTION, AND EVALUATE IT ATT GIVEN POINT P: F(X, Y) = SIN (XY), P = (Î /2, 1 ) 10 POINTS 4. IN PROBLEM #3, COMPUTE THE DIRECTIONAL DERIVATIVE OF THE 2> FUNCTION AT POINT P, IN THE DIRECTION OF U =

Directional Derivative: Problem 3 Previous Problem List Next (1 point) Consider the function f(x, y) -5xy2-x3y. Find the gradient off: Find the gradient of f at the point (2, -4). Find the rate of change of the function f at the point (2, -4) in the direction u = 〈-1/11, V120/11).