Improper Integrals, Infinite Integrands: Compute the improper integrals below. Enter the letter "D" if they diverge.
$\int_0^{1} \frac{1}{x^2}\hbox{d} x =$ .
$\int_0^{1} \frac{1}{x}\hbox{d} x =$ .
$\int_0^{1} \frac{1}{\sqrt{x}}\hbox{d} x =$ .
$\int_0^{1} \ln {x}\hbox{d} x =$ .
$\int_{-1}^{1} \frac{1}{\sqrt{1-x^2}}\hbox{d} x =$ .