domain of the function: A = 8 B = and C= 8 For each of the following intervals, tell whether f'(x) is positive (type in +) or negative (type in -). (-∞, A): (A, B): (B,C): (C, ∞0): For each of the numbers A, B, C state whether it is a local maximum (type MAX), minimum (type MIN) or not in the domain of f(x) (type DNE): A: В: C:

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A: 3)    fx,y,z=x2+y2-2z2+zlnx We have,       grad∅=∇f=i∂f∂x+j∂f∂y+k∂f∂z ∂f∂x=2x+zx ∂f∂y=2y…