determinant

  1. M

    Making an 18x18 Matrix

    Hello! I have to make an 18x18 matrix calculator using excel for my math project. It should be able to solve the determinant, the inverse, the answers if there were a given system of equations, and the L&U of the matrix. I know I could easily do those by using the built-in matrix functions, but...
  2. E

    Problem with MDETERM

    The function MDETERM is miscalculating in the Excel installed in my computer. The matrix in A1:G7 has two identical rows, thus its determinant is zero, as shown in cell I2, where I use the function =MDETERM(A1:G7). The matrix in A9:G15 is the transpose of the first matrix, so its...

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