Determinant of 3x3 Matrix Calculating the determinant of a 3 by 3 matrix. Description The Determinant of 3x3 Matrix block calculates the determinant of a square matrix by the formula Ports Input A - input matrix `3 by 3 matrix Input matrix. Data types: Float64. Output det A - determinant of matrix scalar The determinant of the matrix. Data types: Float64. Additional options C code generation: Yes