$[-/2$ Points$]$

MARSVECTORCALC$68\mathrm{.}4\mathrm{.}009.$

Let $F=yi+8zj+7xzk.$ Evaluate ${}_{\text{d}\text{e}\text{l}\text{W}}F*dS$ for each of the following regions $W.$

$($a$)x^2+y^{2}z1$

$($b$)x^2+y^{2}z1$ and $x0$

$($c$)x^2+y^{2}z1$ and $x0$ Plase do b and c