$\int \frac{\cos \theta+\sin \theta}{\cos \theta-\sin \theta} d \theta$ এর মান হলো-

$\log _{e} \cos \left(\theta+\frac{\pi}{4}\right)+C$

$\log _{\mathrm{e}} \sec \left(\theta+\frac{\pi}{4}\right)+\mathrm{C}$

$\log _{\mathrm{e}} \sec \left(\theta+\frac{\pi}{4}\right)+\mathrm{C}$

$\log _{e} \operatorname{cosec}\left(\theta+\frac{\pi}{4}\right)+C$