Question $2(10$ points$)$

Show that the differential form $in$ the integral $is$ exact $(i.e.$ that the

vector field $is$ conservative$)$ and then evaluate the integral.

${\displaystyle \underset{(0{)}^{(1,\frac{}{2},2)}}{\overset{\phantom{}}{}}},\frac{}{2},2,2,1$