This precalculus video tutorial provides a basic introduction into multiplying matrices. It explains how to tell if you can multiply two matrices together and how to determine the order of the new matrix. The order of the new matrix is based on the rows of the first matrix and the number of columns in the second matrix. To multiply two matrices together, multiply the rows of the first matrix by the columns of the second matrix and find the sum of the products. This video contains plenty of examples and practice problems on matrix multiplication. Introduction to Matrices: https://www.youtube.com/watch?v=yRwQ7A6jVLk Adding and Subtracting Matrices: https://www.youtube.com/watch?v=QXUbFzEd3Ww Scalar Multiplication of Matrices: https://www.youtube.com/watch?v=iJERwUVuwtY Solving Matrix Equations: https://www.youtube.com/watch?v=UHhvcj0doaA Multiplying Matrices: https://www.youtube.com/watch?v=vzt9c7iWPxs __________________________________ Gaussian Elimination & Row Echelon Form: https://www.youtube.com/watch?v=eDb6iugi6Uk Gauss Jordan Elimination: https://www.youtube.com/watch?v=eYSASx8_nyg Gaussian Elimination With 4 Variables: https://www.youtube.com/watch?v=4VAXv6yRULU Inverse of a 2x2 Matrix: https://www.youtube.com/watch?v=aiBgjz5xbyg Inverse of a 3x3 Matrix: https://www.youtube.com/watch?v=Fg7_mv3izR0 __________________________________ Determinant of 2x2 and 3x3 Matrix: https://www.youtube.com/watch?v=3ROzG6n4yMc Determinant of 4x4 Matrix: https://www.youtube.com/watch?v=fWzUwrt1Z0s Cramer's Rule - 2x2 Linear System: https://www.youtube.com/watch?v=vXqlIOX2itM Cramer's Rule - 3x3 Linear System: https://www.youtube.com/watch?v=Ot87qLTODdQ ___________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections