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Integration help

What substitution should I use to integrate sqrt(a-x^2)?
Reply 1
Original post by Vorsah
What substitution should I use to integrate sqrt(a-x^2)?



f.e xa=sint\displaystyle \frac{x}{\sqrt{a}}=\sin t
(edited 9 years ago)
Original post by Vorsah
What substitution should I use to integrate sqrt(a-x^2)?

I'd use xa=sint\dfrac{x}{\sqrt{a}} = \sin{t}.
Reply 3
Original post by Vorsah
What substitution should I use to integrate sqrt(a-x^2)?


should that be sqrt(a^2-x^2)?

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