Question: Verify by differentiation that the formula is correct. a. 1/(x2(1+x2)) dx = - (1+x2)/x + C b. cox3x dx = sinx -1/3 sin3x

Verify by differentiation that the formula is correct.
a. ∫ 1/(x2√(1+x2)) dx = - (√1+x2)/x + C
b. ∫ cox3x dx = sinx -1/3 sin3x + C

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