Question

Select the interval where f(x)>0

Answer 1

Given:

The graph of f(x).

To find:

The interval where f(x)>0.

Solution:

From the given graph it is clear that the graph of f(x) lies above the axis for the intervals (-4,-1) and (1,∞), so f(x)>0 for $-4$ and $1$.

The graph of f(x) lies below the axis for the intervals (-∞,-4) and (-1,1), so f(x)<0 for $-\infty$ and $-1$.

Form the given options, interval $-2$ is the only interval for which the function lies above the x-axis.

Therefore, the correct option is A.

Answer 2

Answer:

answer

Step-by-step explanation: