How this calculator works
Enter a₁₁, a₁₂, a₁₃, a₂₁, a₂₂, a₂₃, a₃₁, a₃₂, a₃₃. CalcStack applies the displayed formula and reports each intermediate planning value with the units shown.
Formula / method
det(A) = a(ei−fh) − b(di−fg) + c(dh−eg)
Worked example
The default matrix has determinant 1.
Assumptions and limitations
Matrix elements are real numeric values.
For large or ill-conditioned matrices, numerically stable decomposition methods are preferable.