1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Area of a curve revolved about x-axis

  1. Mar 2, 2009 #1
    I'm pretty sure i'm setting this up right i just get stuck when i need to integrate it

    the equation is y=e^x and rotated around the x axis

    I've attached the question

    can someone help me thanks

    Attached Files:

  2. jcsd
  3. Mar 2, 2009 #2

    Tom Mattson

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    You'll need 2 substitutions. The most obvious first substitution would be to let [itex]u=e^x[/itex]. Follow that up with an appropriate trig substitution and you're home free.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook