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5 votes
Select the interval where f is positive

Select the interval where f is positive-example-1
Select the interval where f is positive-example-1
Select the interval where f is positive-example-2
User Disp Hay
by
6.2k points

1 Answer

3 votes

Answer:

-1 < x < 1

Explanation:

It's B.

User Niek Tuytel
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5.1k points