Let , for .

A.

B. On what interval or intervals is increasing?

(Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5),(7,10), or enter none for no intervals.)

C. On what interval or intervals is the graph of concave up?

(Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5),(7,10), or enter none for no intervals.)

Use your answers above and your knowledge of derivatives and antiderivatives to sketch a graph of .

You can earn partial credit on this problem.