- #1

Sicktoaster

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I'm new to physics and I see "det" used in math a lot. What does it mean?

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- Thread starter Sicktoaster
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- #1

Sicktoaster

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I'm new to physics and I see "det" used in math a lot. What does it mean?

- #2

SteamKing

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It means to take the determinant of a matrix.

- #3

UncertaintyAjay

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- #4

AMenendez

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- #5

Borek

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finding the determinant is a crucial step in inverting a square (##n \times n##) matrix

Is it?

- #6

Mark44

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finding the determinant is a crucial step in inverting a square (##n \times n##) matrix

I agree with Borek here (in his questioning of your statement about the determinant being a crucial step in inverting a matrix.Borek said:Is it?

Certainly if det(A) = 0, the inverse of A doesn't exist, but for an invertible matrix A, you can find the inverse using Gauss-Jordan without ever taking the determinant. If it turns out that A isn't invertible, the Gauss-Jordan process will end up with a matrix with one or more rows of zeros (instead of the identity matrix) on the left side of your augmented matrix.

- #7

AMenendez

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