Trigonometric Substitution Type 2: x=a tan(t) and Type 3: x=a sec(t)

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Here we discuss more type of problems involving integrals containing the square root of (x^2+a^2) where we substitute x=a tan(x) and integrals containing the square root of (x^2-a^2) where we substitute x=a sec(x).
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just looking for something like this. I wish my teacher was like you.

GurenKamisama
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Hi, Prashant.. this is Gautam from India...A friend of Vinayak Atwale..

er.gautambaste