Practicing Success
\(\int e^{x}\sin x dx\) equals |
\(e^{x}\left(\sin x-\cos x\right)+C\) \(e^{x} \sin x+\cos x+C\) \(\sin x-e^{x}\cos x+C\) \(\frac{e^{x}}{2}\left(\sin x-\cos x\right)+C\) |
\(\frac{e^{x}}{2}\left(\sin x-\cos x\right)+C\) |
Integrating by parts I = \(\int e^{x}\sin x dx\) = \(e^x\int sinx. dx − \int \left(\frac{d}{dx}e^x\right). \int sinx .dx\) = \(e^x(− cosx) + \int e^x cosx. dx\) I = \(− e^x. cosx + e^x. sinx − \int e^x sinx .dx\) ⇒ I = \(e^x (sinx − cosx) − I\) ⇒ 2I = \(e^x (sinx − cosx)\) ⇒ I = \(\frac{e^x}{2} (sinx − cosx) + c\) |