Q01.6

$\int ^{1} _{0} \frac{\sin x}{1-\cos x}dx$

$\int ^{\infty} _{0} \frac{\cos x}{1+x} dx$

$\int ^{\infty} _{0} \frac{x}{1+x^2} dx$

$\int ^{1} _{0} \frac{1-\cos x}{\frac{x^5}{2}} dx$