Solve the given initial$-$value problem $in$ which the input function $g(x)y$ and $y^{\text{'}}$ are continuous $atx=.y^{\text{'}\text{'}}-2y^{\text{'}}+10y=g(x),y(0)=0,y^{\text{'}}(0)=0,$ where

$g(x)=\{\begin{array}{cc}40,& 0x\end{array}$

$0,x>$

$y(x)=\{\begin{array}{cc},& 0x\end{array}$

$,x>$