This video is based on, and meant to be paired with, the Elementary Linear Algebra Workbook created by Shannon Myers. This clip covers matrix equality, addition and subtraction of matrices, multiplying a matrix by a scalar, multiplying two matrices, using matrices to solve a system of equations, partitioning a matrix, and writing a linear combination of column vectors. Enjoy, and please subscribe!

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Dr. David Agus discusses thinking systemically about cancer and other things. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/health-and-medicine/healthcare-misc/v/inflammation?utm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Missed the previous lesson? https://www.khanacademy.org/science/health-and-medicine/healthcare-misc/v/ritual-of-the-bedside-exam?utm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart. One reason may be that your heart helps you live, by moving ~5 liters (1.3 gallons)…

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