If

s equals Gx squared plus $8$ xT plus Upper G squareds$=$Gx$2+8$xT$+$G$2,$

find $($a$)$

StartFraction ds Over dx EndFractiondsdx$,$

$($b$)$

StartFraction ds Over dT EndFractiondsdT$,$

and $($c$)$

StartFraction ds Over dG EndFractiondsdG.