$a.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}cotxln(sinx)dx$

$f.{\displaystyle \underset{0}{\overset{\frac{}{2}}{}}}cos(7x)cos(2x)dx$

$b.{\displaystyle \underset{}{\overset{3\frac{}{2}}{}}}\frac{cosx}{2sinx+3}dx$

$g.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}co{s}^3()si{n}^4()d$

$c.{\displaystyle \underset{e}{\overset{e^2}{}}}\frac{dx}{xlnx}$

$h.{\displaystyle \underset{0}{\overset{}{}}}sinxsin(3x)dx$

$d.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}si{n}^4(3x)dx$

$i.{\displaystyle \underset{0}{\overset{}{}}}sin(3x)cos(4x)dx$

$e.{\displaystyle \underset{0}{\overset{\frac{}{2}}{}}}si{n}^{2}xco{s}^{3}xdx$

$j.{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}co{t}^5(2x)cs{c}^5(2x)dx$