1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Integral of sin(x^2) TI-89

  1. Nov 7, 2009 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
    I don't see where there's enough "stuff" to play with to get past the first integration. My TI-89 can't do it and sin(x2) isn't in my integrals tables.

    Sorry about the LATEX issues. It's correctly presented now. I'm looking at my assignment and I'm 100% sure this is what the professor asked for.
    Last edited: Nov 7, 2009
  2. jcsd
  3. Nov 7, 2009 #2


    User Avatar
    Homework Helper

    I can't really decipher your LaTex code, but ∫sin(x2) dx has no elementary anti-derivative.

    so normally you can't compute it

    [tex]\int \int sin(x^2) dxdy[/tex]

    One can't find this

    though one can find

    [tex]\int \int sin(x^2) dydx[/tex]

    Were you trying to compute a double integral by chance?
  4. Nov 7, 2009 #3
    What you can do is reverse the integral, since dxdy = DA.

    So swap the integral and find the volume with respect to dydx
  5. Nov 7, 2009 #4
    The second part of the problem asks for a corresponding dydx double integral (and associated integration ranges) that would give you the same value once computed.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook