Line 42:
is the lower triangular for the matrix:
:<math>\begin{bmatrix}
Line 50 ⟶ 49:
\end{bmatrix}</math>
and,▼
▲ and
:<math>\begin{bmatrix}
Line 59 ⟶ 57:
\end{bmatrix}</math>
is the upper triangular for the matrix:
:<math>\begin{bmatrix}
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