Question: Given a lower triangular matrix L , write code to calculate its inverse. Analyze the computational complexity ( the number of additions / multiplications needed

Given a lower triangular matrix L, write code to calculate its inverse. Analyze
the computational complexity (the number of additions/multiplications needed)
If A is nonsingular, prove that the LU decomposition of A is unique.
Given a lower triangular matrix L, write code to calculate its

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