A = [1 -1; -1 5];

L = [ 1 0;

-1 2]; //Lower Triangular Decomp via choleksy method

Lt = [1 -1; 0 2]; //L transpose

B = [-1; 9]; //B vector since were solving Ax = B -> L*Lt*x = B

Linv = inv(L) //calculating inverse of L

B*Linv //Computing multiplication

Error using *
Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix.