Use the indicated x-values on the graph of to determine intervals over which the graph is concave up.
A) and
E) and

Question

Use the indicated x-values on the graph of  to determine intervals over which the graph is concave up.  ​
A) and 
E) and

Quizplus · Accepted Answer

Concave up means the graph is curving upwards, or the second derivative is positive. From the graph, we can see that the second derivative is positive between the x-values of approximately -3 and 0, and again between the x-values of approximately 2 and 4. Therefore, the best choice is A.

Use the Indicated X-Values on the Graph of to Determine