Mathematics

Mathematics

Problem

Evaluate ∫5x+2x2+2x+5 dx\displaystyle \int \frac{5x+2}{x^{2}+2x+5}\,dx. a) 52ln⁡(x2+2x+5)−3tan⁡−1(x+12)+C\dfrac{5}{2}\ln\left(x^{2}+2x+5\right)-3\tan^{-1}\left(\dfrac{x+1}{2}\right)+C b) 52ln⁡(x2+2x+5)−32tan⁡−1(x+12)+C\dfrac{5}{2}\ln\left(x^{2}+2x+5\right)-\dfrac{3}{2}\tan^{-1}\left(\dfrac{x+1}{2}\right)+C c) 52ln⁡(x2+2x+5)+32tan⁡−1(x+12)+C\dfrac{5}{2}\ln\left(x^{2}+2x+5\right)+\dfrac{3}{2}\tan^{-1}\left(\dfrac{x+1}{2}\right)+C d) 54ln⁡(x2+2x+5)−32tan⁡−1(x+12)+C\dfrac{5}{4}\ln\left(x^{2}+2x+5\right)-\dfrac{3}{2}\tan^{-1}\left(\dfrac{x+1}{2}\right)+C

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