Proof for adding row to another row preserve singularity/non-singularity

Hi community,

In the video https://www.coursera.org/learn/machine-learning-linear-algebra/lecture/3UmWw/row-operations-that-preserve-singularity, Luis mentioned that the proof for adding row to another row preserve singularity/non-singularity is included in a written tandem in the resources of the class. But I cannot find it anywhere.

Can anyone kindly point me to that?

Thank you.

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Hello @izaq09 at what timestamp did he say so?.. But I have also found that he has explained it at 2:50/3:36?

Hi Isaak,

Thanks for your reply.

He mentioned at 3:22 that proving the concept is harder, so he will attach it in the written tandem in the resources of the class.

This is the transcript of the video.

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Hi Did you ever find the written tandem in the resources of the class?