Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Qucik Question

  1. May 14, 2005 #1
    How does pi(y/2pi)^2 = y^2/4pi????

    I am confussed.

    Thanks
     
  2. jcsd
  3. May 14, 2005 #2
    [tex]\pi \left(\frac {y} {2\pi}\right)^2 = \frac {\pi y^2} {(2\pi)^2} = \frac{\pi y^2} {4\pi^2} = \frac {y^2} {4\pi}[/tex]
     
    Last edited: May 14, 2005
  4. May 14, 2005 #3

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    In short and abstract form

    [tex] \left(\frac{a}{b}\right)^{2}=\frac{a^{2}}{b^{2}} [/tex]

    and

    [tex] \left(ab\right)^{2}=a^{2}b^{2} [/tex]

    ,okay?

    Daniel.
     
  5. May 14, 2005 #4
    what happens to the pi on top?
     
  6. May 14, 2005 #5
    It cancels with one of the pi's on the bottom.

    [tex]\frac{\pi y^2} {4\pi^2} = \frac{\pi y^2} {4\pi*\pi} = \frac{\pi(y^2)}{\pi(4\pi)}[/tex]

    Do you see how you can cancel?
     
  7. May 14, 2005 #6
    Yes Thanks
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Qucik Question
  1. A question (Replies: 3)

  2. A question (Replies: 8)

  3. A question (Replies: 5)

  4. A question (Replies: 8)

  5. Probability Question (Replies: 6)

Loading...