Find $[0],[$m$54],[27],[00],[270],[$b$27],[$b$0],[$c$00],[$c$1],$ and $[$d$0].$ Using a value of $\frac{k}{m}=270,$ write state$-$space equations for the undamped two$-$story building system. Using that result fill in blanks to identify A$,$ B$,$ C and D matrices.

$[$A$]=$

$\backslash$table$[[0,1,0,0],[m54,0,27,0],[0,00,0,1],[270,0,-270,0]]$

$[$B$]=$

$\backslash$table$[[0],[b27$