Gaussian Elimination: Forward Elimination and Back-Substitution

In this video we begin to describe one of the ways we can use matrices to solve systems of linear equations.
There is an arithmetic error at about 10:47. The value 2(300)+(-300) should be 300, not -300. Worse still, it should have been -2(100)+(-100)
The remaining process is still valid.

[leslieglen]

There is an arithmetic error at about 10:47. The value 2(300)+(-300) should be 300, not -300. Worse still, it should have been -2(100)+(-100)
The remaining process is still valid.

[jingyiwang]

This video is definitely very helpful for me. I was at a loss reading my textbook for my linear algebra class. I was confused with all the abstract terms. Thanks to your video, I finally understand what it means to have forward elimination.

[liteandsound]

In the 3rd step, element 3, 4 shd be -300 instead of +300. Then we get the solution -200, 0, 300

[ahmedalsdi]

nice video but there is a mistake I hope you delete it so people don't get confused, anyway thank you very much