Results 1 to 2 of 2

Math Help - Some more areas with polar stuff

  1. #1
    Newbie
    Joined
    Oct 2009
    Posts
    13

    Some more areas with polar stuff

    Sorry for spamming everybody, but I keep getting the wrong answer and I don't know what I'm doing wrong, or if I'm even doing it right in the first place!

    Find the area between a large loop and the enclosed small loop of the given curve.
    r = 1 + 2cos(3θ)


    aaaand this one:

    Find the area of the region that lies inside both curves.
    r = 6 + cos(θ)
    r = 6 - cos(θ)


    I love you for helping me!!!!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Aug 2007
    From
    USA
    Posts
    3,111
    Thanks
    2
    What was the nature of the integrals that you used? In particular, what were the limits of integration on \theta?

    For the second, same quesiton. The limits are very important. You must understand your curve.

    Note for Both: Please don't work harder than necessary. Exploit every possible symmetry.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Polar Equations and Areas
    Posted in the Calculus Forum
    Replies: 3
    Last Post: July 27th 2010, 06:27 PM
  2. Replies: 8
    Last Post: September 3rd 2009, 12:38 PM
  3. Areas in Polar Coordinates
    Posted in the Calculus Forum
    Replies: 8
    Last Post: April 28th 2009, 11:44 AM
  4. Polar Curves stuff
    Posted in the Calculus Forum
    Replies: 1
    Last Post: April 27th 2009, 05:05 PM
  5. Areas under and between polar curves
    Posted in the Calculus Forum
    Replies: 2
    Last Post: April 25th 2008, 05:40 PM

Search Tags


/mathhelpforum @mathhelpforum