Video on Matrix Multiplication
Video on Matrix Multiplication. Matrices can be multiplied when the number of rows and the number of columns are equal.
If we have Matrix A with x number of rows and Matrix B with x number of columns, then we can multiply Matrix A and Matrix B together.
Video on Matrix Multiplication. Matrices can be multiplied when the number of rows and the number of columns are equal.
Video on Powers of Matrices. Matrices can be multiplied when the number of rows and the number of columns are equal which means that finding the power of a matrx requires the matrix to have the same number of columns as rows (ie be a square).
Finding the inverse of a matrix depends on you understanding the concept of the identity and the idea that you cannot have a denominator of zero. Once you have these ideas in your head, the inverse matrix becomes much more accessible.
Video on solving simultaneous equations using matrices. This might seem a little long winded for the equations given but once you get your head around it, it offers a viable alternative to the more conventional substitution and elimination methods.