$($a$)$ Calculate the maximum space charge width xdT and the maximum space charge

density Q SD $($max$)$ in a MOS capacitor with a p$-$type silicon substrate at T $300$ K

for doping concentrations of $($i$)$ Na $71015$ cm $3$ and $($ii$)$ Na $31016$ cm $3.$

$($b$)$ Repeat part $($a$)$ for T $350$ K$.$