Let R be the region bounded by the graphs of y=sin(pi x) and y=(x^3)-4x, as shown in the figure above. (a) Find the area of R. (b) The horizontal line y=-2, x=2, x=-1. Write, but do not evaluate, an integral expression for the area.

Answer 1

Without a figure, it is not clear what R stands for.
Here's a plot of the functions. See if it is similar to the figure in your book/exercise. Describe the region R.

The question in part(b) seems incomplete, please check.

Answer 2

Without a figure, it is not clear what R stands for.
Here's a plot of the functions.

http://img862.imageshack.us/i/1299879828.png/

See if it is similar to the figure in your book/exercise. Describe the region R.

The question in part(b) seems incomplete, please check.

Answer 3

go to the calc page... calcmaster/calcAB#3Freeresponse43235. o r g