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Integral problem

  • Thread starter shadow5449
  • Start date
I've almost gotten through this one integral problem, but i've seem to have gotten stuck:

integral ((sqrt(4-x^2))/x) dx
i let x = 2sin(theta), and dx = 2cos(theta)d(theta)
sqrt(4-x^2) = 2cos(theta)
integral ((2cos(theta))/(2sin(theta)) * 2cosd(theta)
2 integral cos^2(theta)d(theta)/sin(theta)

That's as far as I got, any suggestions?
 
2,208
1
Sure, express [itex] cos^2(\theta) [/tex] in terms of the sin function, sort of like yo udid earlier. You're on the right track.
 

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