7.1 Integration By Parts/33

$\int (cos{\sqrt {x}})dx$ = Failed to parse (unknown function "\intcosudu"): {\displaystyle 2\sqrt{x}\intcosudu} = $2\int {u}cosudu$

${u}$ = ${\sqrt {x}}$

${du}$ = ${\frac {1}{2{\sqrt {x}}}}dx$

$2{\sqrt {x}}{du}$ = ${dx}$