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: Integ 1 / sqr root(a^2 - x^2 )

  1. Jan 19, 2006 #1
    does anybody knows how to do integ 1 / sqr root(a^2 - x^2 )......
    pls help..........
     
  2. jcsd
  3. Jan 19, 2006 #2
    Think inverse trig.
     
  4. Jan 19, 2006 #3
    ya i thought of using diff of arcsin ax = a / sqr root (1 - (ax)^2 )
    but if i do so the numerator will be 1/a^2 rite??

    pls help
     
  5. Jan 19, 2006 #4
    Close, it would be 1/a, like this: [tex]\int\frac{du}{\sqrt{a^2-u^2}} = arcsin \frac{u}{a} + C[/tex]
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook