Surface made by two curves


by Jasty
Tags: curves, surface
Jasty
Jasty is offline
#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.
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
tiny-tim
tiny-tim is offline
#2
May17-08, 06:13 AM
Sci Advisor
HW Helper
Thanks
tiny-tim's Avatar
P: 26,167
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
HallsofIvy is offline
#3
May17-08, 06:35 AM
Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,882
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
Jasty is offline
#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.


Register to reply

Related Discussions
Cells are made of molecules,molecules are made of atoms,atoms are made of energy.so.. Biology 9
Surface Area and Surface Integrals Calculus & Beyond Homework 2
Riemann surface, elliptic curves General Math 6
Surface w/ max volume and min surface area Calculus 13
Surface Area (Surface of Revolution) - Discrepancy Calculus 23