Finding an Indefinite Integral In Exercises $27-32,$ find the indefinite integral.

$27.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{1}{7x-2}dx$

$28.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x^2}{x^{3}1}dx$

$29.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{sinx}{1cosx}dx$

$30.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{ln\sqrt[\phantom{2}]{x}}{x}dx$

$31.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x^2-6x1}{x^{2}1}dx$

$32.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{dx}{\sqrt[\phantom{2}]{x}(2\sqrt[\phantom{2}]{x}5)}$