f(x, y, z, w) = a cosz+acosy+acosz+acos w+zy+yz+zw which is a function of four variables, and it has a critical point at x=y=z=w = 0 (this is obvious; you do not need to verify it). (A) Classify the critical point, assuming a = 0. (B) Classify the critical point, assuming a = 1/2. (C) Classify the critical point, assuming a = 1.

Q: Let f(x, y) = 2x² + 2xy+ y² – 6x + 2y be given. Find and classify critical points of the given…

A:

Q: The function f(x, y) = 1 + x² + y² at the point (0,0) is local max صواب İhi

A:

Q: Find the critical points of f(x, y) = x³ – 6xy + y³. Use the second derivative test to classify each…

A: For the solution follow the next steps.

Q: (2) Consider the function f(x, y) = -x* - ²- 3 + ry³ + 5. (a) Find the critical points of f. (b)…

A:

Q: Find and classify any critical points of the function f(x, y) = -4xy + y² + 5x - 4y + 5.

A: