- #1
teme92
- 185
- 2
Homework Statement
a) Find the inverse of the matrix:
[tex]\begin{pmatrix}1 & 2 & 0\\
2 & 0 & 1\\
1 & 1 & 2\end{pmatrix}[/tex]
(sorry I don't know how to show a matrix more clearly on this)
b) Write A and A-1 as a composition of matrices of the form Rij(k), Tij and D22(k)
Homework Equations
The Attempt at a Solution
So I've done part (a) and ended up with the inverse as:
[tex]\begin{pmatrix}1/7 & 4/7 & -2/7\\
3/7 & -2/7 & 1/7\\
-2/7 & -1/7 & 4/7\end{pmatrix}[/tex]
(sorry again)
My problem is, I don't understand part (b). Any help would be much appreciated.
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