hello962
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PLEASE HELP!!! Select ALL the intervals where f(x)= −x^3 + 3x^2 + 1 is only decreasing:

2 < x < ∞

1 < x < 5

-∞ < x < ∞

0 < x < 2

-∞ < x < 1

-∞ < x < 0

5 < x < ∞

Respuesta :

Answer:

2 < x < ∞ is the only interval on which f(x) is only decreasing.

Step-by-step explanation:

The graph of f(x) shows that the only interval on which f(x) is increasing is on the interval (0, 2).

The only interval listed which contains no values between 0 and 2 is the interval 2 < x < ∞.

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