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# Python | sympy.det() method

• Last Updated : 29 Jun, 2019

With the help of `sympy.det()` method, we can find the determinant of a matrix by using `sympy.det()` method.

Syntax : `sympy.det()`
Return : Return determinant of a matrix.

Example #1 :
In this example, we can see that by using `sympy.det()` method, we are able to find the determinant of a matrix.

 `# import sympy``from` `sympy ``import` `*`` ` `# Use sympy.det() method``mat ``=` `Matrix([[``1``, ``0``, ``1``], [``2``, ``-``1``, ``3``], [``4``, ``3``, ``2``]])``d ``=` `mat.det()``  ` `print``(d)`

Output :

-1

Example #2 :

 `# import sympy``from` `sympy ``import` `*`` ` `# Use sympy.det() method``mat ``=` `Matrix([[``1``, ``5``, ``1``], [``12``, ``-``1``, ``31``], [``4``, ``33``, ``2``]])``d ``=` `mat.det()``  ` `print``(d)`

Output :

-125

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