1. The problem statement, all variables and given/known data Hi! I have the 3x3 matrix for L below, which I calculated. But now I need to figure out how the equation below actually means! Is it just the inverse of L (L^-1)? I cannot proceed if I don't know this step. 2. Relevant equations See image 3. The attempt at a solution I put in the values in the calculator, but still get a wrong answer. You can see the 3x3 matrix and the values.