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  1. Prepare
  2. Mathematics
  3. Linear Algebra Foundations
  4. Determinant of the matrix #1
  5. Discussions

Determinant of the matrix #1

  • 152334h1
     + 0 comments

    matrix is only N=5, might as well bruteforce recurse

    A = [
  [3,0,0,-2,4],
  [0,2,0,0,0],
  [0,-1,0,5,-3],
  [-4,0,1,0,6],
  [0,-1,0,3,2]
]
def det(A):
  N = len(A)
  if N == 1: return A[0][0]
  return sum(
    (-1)**i * v * det([[v for j,v in enumerate(ls) if j != i] for ls in A[1:]])
    for i,v in enumerate(A[0])
    if v
  )

print(det(A))