Determinants

How to find the determinant of 2x2 and 3x3 matrices.

Category:

Education

Tags:

• algebra
• matrices
• determinant

[gcg3623]

Hi I am a computer teacher. I would like my students to be able to make videos similiar to yours. You did a great job. What program did you use to make your video?

Thanks

Greg

[waszel]

@gcg3623 Hey Greg, I use a Wacom Bamboo tablet, Photoshop (for the "whiteboard", colors, and layers), and Screenflow (screen capture software for Mac).

Have fun.

--Randy

[Addicti0nz1]

thisss isss soo much more easier than the method i was taught at school

[waszel]

@Addicti0nz1 Keep in mind this only works for a 3x3 matrix. You may have learned the Cofactor Expansion method to find determinants. That method works for finding the determinant of any square matrix, and that's the method generally needed for matrices of order 4x4 or higher. Study well.

[ThePhilatkinson]

Thanks for the video. It was in depth and informative. You also taught a method that was much better than the method I had previously learned.

[supermario0190]

Great help, But the method for the 3 by 3 method is a little hard to memorize, and there ARE other methods. However, people should use the one that works best for them no?

[scribblefantastic]

Thanks! I get it now!

[supernintendonerd64]

thank you i have a test today and am behind aprox 2 lessons! now only one!

[GDelva2003]

That method only works for a 3 x 3.

[bronzeddiamond]

Your explanation paid off. I finally got the right answer. Thanks.

[thedda11ralph]

@PauliLop5 ssame here ^^.

[thedda11ralph]

wow! your a great teacher! i learned a lot!