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Surface made by two curves

by Jasty
Tags: curves, surface
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Jasty
#1
May17-08, 05:00 AM
P: 5
1. The problem statement, all variables and given/known data

y=x^2-2.x
y=x^3

2. Relevant equations

none

3. The attempt at a solution

I have no idea how to do this so please help me. Thank you.
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tiny-tim
#2
May17-08, 06:13 AM
Sci Advisor
HW Helper
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tiny-tim's Avatar
P: 26,148
Hi Jasty!

Are you trying to find the area?

If so, divide it into slices of thickness dx, find the area of each slice, and integrate.
HallsofIvy
#3
May17-08, 06:35 AM
Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,683
1. Draw their graphs.

2. Determine where they intersect.

3. Imagine the area divided into thin, vertical rectangles.

4. What would be the area of each of those rectangles?

5. Their total area is a Riemann sum. Convert that into an integral.

Jasty
#4
May17-08, 10:31 AM
P: 5
Surface made by two curves

Thanks a lot. Finally, i found out how to deal with this one.


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