linear algebra

[hidden marsh]

Is the determinant 0

[twilit iris]

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[hidden marsh]

I undid all of the elementary row operations and I got a 0 on the main diagonal

[hidden marsh]

Question is find the Det of A

[ancient light]

You get $\det(E_4)\det(E_3)\det(E_2)\det(E_1)\det(A)=210$, so $\det(A)$ cant be 0

[south cairn]

Omegabet_

[hidden marsh]

Ooh so I multiply each one in order to get the final determinate

[ancient light]

yes..

cause you're told $E_4E_3E_2E_1A=$ that matrix

[south cairn]

Omegabet_