Math
Matrix 3×3 Calculator
Determinant of a 3×3 matrix (row-major a11…a33).
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Determinant
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This free Matrix 3×3 Calculator covers Determinant of a 3×3 matrix (row-major a11…a33).
The determinant expands along the first row (or any row) by cofactors. Related math tools sit beside How it works, with no account required.
Using the Matrix 3×3 Calculator
Determinant of a 3×3 matrix (row-major a11…a33). Typical inputs are a11, a12, a13 and a21. How it works beside the form states the identity the Matrix 3×3 Calculator applies.
FAQ
How do I use the Matrix 3×3 Calculator?
Open the Matrix 3×3 Calculator, fill a11, a12, a13 and a21, and read the result. The determinant expands along the first row (or any row) by cofactors.
What formula does the Matrix 3×3 Calculator use?
The Matrix 3×3 Calculator uses the identity in How it works. In words: The determinant expands along the first row (or any row) by cofactors.