Question

Let f be the function with derivative given by f'(x) = x^2 - 2/x. On which of the following intervals is f decreasing? A. (-infinity, -'1) only B. (-infinity, 0) (-1, 0) only C. (0, 3 squareroot 2) D. (3 squareroot 2, infinity)

Answer 1

Let f be the function with derivative given by f'(x) = x^2 - 2/x. On which of the following intervals is f decreasing? A. (-infinity, -'1) only B. (-infinity, 0) (-1, 0) only C. (0, 3 squareroot 2) D. (3 squareroot 2, infinity)
Answer=c
Step by step sol= pic below