$($d$)$

$(3)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{sinx}{\sqrt[\phantom{2}]{9co{s}^{2}x+16}}dx$

$($e$)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{1}{x^2\sqrt[\phantom{2}]{x^2+4}}dx$

$[25]$