29. Find the inverse of the 5 x 5 lower triangular matrix T where

$$\begin{bmatrix}

1 & 0 & 0 & 0 & 0 \\

1 & 1 & 0 & 0 & 0 \\

1 & 1 & 1 & 0 & 0 \\

1 & 1 & 1 & 1 & 0 \\

1 & 1 & 1 & 1 & 1 \\

\end{bmatrix}$$.