### Formula

detA

The determinant of a 2-by-2 matrix A

a

vector a

b

vector b

c

vector c

d

vector d

detA

The determinant of a 2-by-2 matrix A

a

vector a

b

vector b

c

vector c

d

vector d

In linear algebra, the determinant is a value associated with a square matrix. It can be computed from the entries of the matrix by a specific arithmetic expression, while other ways to determine its value exist as well.

a

b

c

d

detA

Precision

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