Why people need to define determinant ?

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why people need to define "determinant"?

why people need to define "determinant"? Of course there are many reasons
but what i want to know is the first one. -i.e- the origin of determinant
 
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matness said:
why people need to define "determinant"? Of course there are many reasons
but what i want to know is the first one. -i.e- the origin of determinant

There are oh so many applications of the determinant. I will list a few:
* Finding inverse of a matrix
* Finding area/volume
* Cross product
* Eigenvalues / eigenvectors
and so on...

You might find some of these topics related, but my point is; there's loads of things you can do using determinants!
 

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