Scalar Multiplication of Matrices and Matrix Operations

This precalculus video tutorial provides a basic introduction into the scalar multiplication of matrices along with matrix operations.

Adding and Subtracting Matrices:

Scalar Multiplication of Matrices:

Solving Matrix Equations:

Multiplying Matrices:

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Gaussian Elimination & Row Echelon Form:

Gauss Jordan Elimination:

Gaussian Elimination With 4 Variables:

Inverse of a 2x2 Matrix:

Inverse of a 3x3 Matrix:

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Determinant of 2x2 and 3x3 Matrix:

Determinant of 4x4 Matrix:

Cramer's Rule - 2x2 Linear System:

Cramer's Rule - 3x3 Linear System:

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Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[vividdreams]

This concept is so easy. As a pre-calc student, I'm glad to get a break.

[georgesadler]

MR. Organic Chemistry Tutor, this is another solid introduction to Linear Algebra and Matrix Operations. Linear Algebra/Systems is built into all technical classes.

[DANKUMGYE]

"Thanks for watching" and Thank you for teaching♥

[tamandabasikolo]

Love your videos...you explain clearly makes it easy to understand and get the concept

[datpham]

There is a gap at the end of every of your videos that's great. I have time to move on to next video.

[kaylia]

At 6:38 aren't you supposed to subtract and not add them? I'm confused since you said 5A-6B..

[rugiraemmanuel-hk]

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[tempestpncr]

I feel like you have stereotypical boston accent and I love it.

[rosangapachuau]

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[Reddit_talkers]

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[muhammaduc]

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[Tricreators]

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[MohamedMostafa-llym]

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[b__]

can someone explain why at 2:14 a plus sign was put when the question says minus?

[SyedAshfaq-okxc]

You sound like Sheldon cooper sir, your lectures help me alot

[cyndifeeney]

Please jog my thinking with why are we multiplying by 3 and 4 and what determined the factors for your second example. Thank you.

[funcarolina]

love your videos .. you explain so clearly thank you so much

[napomsliproll]

I love your vedio much, plz keep doing it!!!!

[sunoocutie]

isn't -6+-21 is equal to -27? correct me if im wrong

[kanzuk-]

Why did you choose 3a and 4b did you randomly choose and i can choose any digit or is there a method?