Saturday
August 23, 2014

Homework Help: Calculus

Posted by Hannah on Tuesday, May 21, 2013 at 4:52pm.

We're learning disks, shells, and cylinders in school but we have a substitute and I've been trying to teach this to myself. Can you check them please? =) Thank you!

1) Find the volume of the solid formed when the region bounded by curves y=x^3 + 1, x= 1, and y=0 is rotated about the x-axis.

My answer is 23/14.

2) Find the volume of the solid of revolution obtained by revolving the region bounded by y=1/x and the lines x=pi/8 and x=pi/2 around the x-axis.

I got 6/pi for this one.

3) Find the area bounded by the curves f(x)= x^3 + x^2 and g(x)= 2x^2 + 2x.

My answer: 5/12

Can you tell me if I did them wrong, and if I did do them wrong what I Did wrong?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Calculus - We're learning disks, shells, and cylinders in school but we have a ...
American History - I am trying to locate either the name of the school or school...
english - Conservatives love to teach and you decide. Liberals love to teach ...
English - Can you please help me check these sentences? Thank you very much. 1) ...
Calculus (Check) - This seems to easy. Check please. Find. Lim (x^2)-4 x->2 e...
English - I urgently need you to check this. Thank you, Writeacher. 1) Sorry for...
English - Just reminding! If anyone has any ideas on how to teach first graders ...
English - Can you please check these sentences? I'm still doubtful about the use...
Chemistry - In the recent Chem Activities, we have been learning about how ...
Gen - i need help or suggestions answering these please.. Identify what ...

Search
Members