Calculus

$[The$ following integral can $be$ solved $in$ several ways. What you will

$do$ here $is$ not the best way, but $is$ designed $to$ give you practice $of$ the

techniques you are learning.$]$

Use the trigonometric substitution $x=2sin()to$ evaluate the integral

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x}{\sqrt[\phantom{2}]{4-x^2}}dx,$ you will need $to$ make another, different substitution.