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

Proving integration of arcsinx

  1. Jan 19, 2006 #1
    proving for intge of (arcsinx) .

    pls help.....thanx
  2. jcsd
  3. Jan 20, 2006 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Start with x = sin y

    Differentiate. Use a trig identity to express the cos you get in terms of the original function (sine). Rewrite that replacing the sin y's with x's.

    Edit: Whoops, nevermind. That will give you the deriviative of y = arcsin x, eventually. It looks like you want the integral of arcsinx, but I can't be sure. If you want help, you really should state the problem more clearly than you have.
  4. Jan 20, 2006 #3


    User Avatar
    Science Advisor

    This is posted under homework help but you have not shown what you have already tried yourself.
  5. Jan 20, 2006 #4


    User Avatar
    Homework Helper

    [tex]\int \arcsin (x) dx[/tex].
    Looking at that integral, you have no idea how to begin it, then the most common thing to do is to use integrating by parts. What's u, and what's dv, you think?
  6. Jan 20, 2006 #5


    User Avatar
    Science Advisor

    Well, there's only one function and you don't know immediately how to integrate it (that's the whole problem!) so how about trying
    u= arcsin(x), dv= dx?

    By the way, is there a reason for posing problems about derivatives and integrals in the precalculus section?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook