Find the gradient field F of the function f.f(x, y, z) = 

A. F = i + 2yj + 2zk
B. F = (x2 + y2 + z2)i + j + k
C. F = i + j + k
D. F = i + j + k

Answer: C

Mathematics

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A. -(7x + 6)(x - 8) B. -(7x - 6)(x + 8) C. -(6x + 7)(x - 8) D. -(7x - 8)(x + 6)

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Solve by completing the square to obtain exact solutions.2x2 + 7x + 3 = 0

A.
B. -1, 3
C. -3, - 
D.

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