14+ hour, 18+ min ago (253+ words) Watch the recursive beauty of Laplace expansion unfold Signs alternate: cofactor Cij = (-1)i+j " Mij Step 2: The remaining elements form the minor matrix Struggling to understand how determinants really work? This interactive visualizer transforms the abstract cofactor expansion method into a clear, visual experience. Instead of memorizing formulas, you'll see the mathematical logic unfold. Watch as each matrix element gets circled, its row and column crossed out, and a smaller submatrix emerges. The recursive beauty of determinants becomes obvious as large problems break down into smaller, manageable pieces. No more confusion about signs'the checkerboard pattern is right there. No more mystery about minors'you'll see exactly which elements remain. The calculator automatically finds the smartest expansion path (choosing rows/columns with the most zeros), teaching you strategic thinking alongside computation. Pause at any step to study the process at your own…...