How to do Matrix Multiplication

Learn how to multiply matrices in this free math video tutorial by Mario's Math Tutoring.

0:16 Analyzing the Dimensions of the Matrices
0:36 Can You Multiply the Matrices Together?
1:21 Is Matrix Multiplication Commutative?
2:05 Example 1
2:26 Draw the Resultant Matrix
2:39 Work Backwards to Solve for the Missing Elements
4:06 Example 2 Multiplying Square Matrices 2 x 2
4:34 How to Solve for Just 1 of the Elements in Resultant Matrix
5:49 Example 3 Multiplying 2 Matrices that are a Dimensional Mismatch

Related Videos:

My Matrices Video Playlist

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[MariosMathTutoring]

Your welcome Armani! Glad the video helped.

[FrogWizard]

Your videos are always so simple and to the point. You always answer at least one of my questions right off the bat, too. Thank you!

[zoya-mfmv]

OH. MY GOD. YOU LITERALLY EXPLAINED THE TOPIC THAT I COULDNT UNDERSTAND FOR LIKE 2 YEARS IN 6 MINUTES. THANK YOU SO MUCH!!!!😭❤️

[Lil_Koppa]

Thanks for the help, I have an upcoming test in Martrix and this helped so much. Thanks!😊😊

[wistfulgraph]

Really liked the way you transformations to make it really clear what you multiple together. Thanks for the help!! Amazing video

[MusanGreen]

Brilliant explanation! Thank you, Sir.

[brandonhumbert]

Great video. Short and to the point. Other videos drag on and on, but you keep them short and sweet.

[nickmg]

Thanks very much, short and sweet, explained everything perfectly. I subscribed to your channel.

[ibrahimhegazi]

Thx for the help.👍👍
I was wondering how a great teacher like you didnt get the 1 millions subscribes until today.

[Luffy-dtut]

Thank you this method helped me in some other problem thank you for brief explanation 😊😊

[akashsingh]

Thank You for Help
Love From 🇮🇳 India

[jacobvandijk]

Hi Mario, is multiplying a 1x3-matrix by a 3x1-matrix the same thing as taking the dot-product? They both give a scalar, don't they?

[manumagics]

You r the best teacher who explained me the best with out doubts
Waiting for ur comment on my comment

[AhmadAli-jfsn]

Thank you!! Excellent techniques.. You help me so much

[monstar]

Someone asked me to prove 3 X 1 =1
To which I responded its not possible.
But the person says 'I have the solution but you need to find the answer on your own'
Is yt possible by any chance?

[Bhyble]

It seem u are misinterpreting the direction of rows and columns