I’m trying to solve Ax = b in matrix.
using ToeplitzMatrices function toeplitz(n) r = [4; -1; zeros(n-2)] Toeplitz(r, r) end
and I’m using this function to generate matrix with n [10,100,200,300,400] and try to solve Ax = b (Cholesky factorization)
I found that probably I can use LDL factorization
for a in [10, 100,200,300,400] A = toeplitz(a) LDLT = ldl(A) x = LDLT \b end
and gave it `UndefVarError: ldl not defined
 top-level scope at .\In:3`
I’m not sure what I should change. Or maybe it’s not a good way to resolve this and there is another way ?