Posted by **Kajal** on Saturday, May 28, 2011 at 5:54pm.

f(x)=2x^3-x^2+1 [1,4]=interval

Set up the limit process (once with right endpts, and the other with left entdpts.) to find the area under the curve and above the x-axis on the given interval

Should the right and left endpt limit set ups have the same area? If so what is it?

PLEASE HELP.....I GOT 107.55 BUT IT IS NOT THE RIGHT ANSWER AND I DONT SEE HOW THERE CAN BE A DIFFERENCE IN SETTING UP

- calculus!!! please help!!! -
**drwls**, Saturday, May 28, 2011 at 11:41pm
f(x) is always above the x axis in that interval. Therefore just integrate the function from 1 to 4. I don't know what you mean by "the limit process".

The indefinite integral is x^4/2 -x^3/3 +x. That equals 128 -21.33 +4 = 110.67 at x = 4 and 0.50 -0.33 +1 = 1.17 at x = 1.

The area should be 110.67-1.17 = 109.50

My algebra tends to be sloppy, so my answer could be wrong, too.

- calculus!!! please help!!! -
**Kajal**, Sunday, May 29, 2011 at 5:08pm
thanks so much!!!

## Answer This Question

## Related Questions

- Basic Caluculus - f(x)=2x^3-x^2+1 [1,4]=interval Using the limit process, (once...
- Calculus - These are the two problems from my homework I don't get.. can you ...
- calculus - use reimann sums and a limit to compute the exact area under the ...
- Calculus - Approximate the area under the curve on the given interval using n ...
- calculus - Use the limit process to find the area of the region between the ...
- calculus - use limit process. find area of region between graph y= -3x + 20 and ...
- calculus - A region is bounded by the function y=2x^2+3 and the x-axis over the ...
- Calculus - Use the Left and Right Riemann Sums with 80 rectangle to estimate the...
- calculus(Lab) - Well, first graph the graph of f(x)=-1/10x^2 + 3 2. We are going...
- Calculus - Find the area cut off by x+y=3 from xy=2. I have proceeded as under: ...

More Related Questions