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  • 5 years ago

I know how to find the determinant of a matrix. However I dont know what this number is used for; or what is the physical meaning of it. Can someone explain it? Thanks

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  1. watchmath
    • 5 years ago
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    It seems you know already that determinant can be used to compute area of triangles. Here is another application: http://www.math.ucdavis.edu/~daddel/linear_algebra_appl/Applications/Determinant/Determinant/node11.html The role of determinant is similar to the discriminant of a quadratic equation. The determinant tells us if Ax=0 has a unique solution or not also can tells us if Ax=b has a solution or not.

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