Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant of a square matrix is nonzero if and only if the matrix has a multiplicative inverse.

Popular Tutorials in Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant of a square matrix is nonzero if and only if the matrix has a multiplicative inverse.

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  How Do You Find the Inverse of a 2x2 Matrix?

  When you multiply a matrix and its inverse together, you get the identity matrix! Follow along with this tutorial to practice finding the inverse of a 2x2 matrix.

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  What is the Identity Property of Matrix Addition?

  This tutorial introduces you to the Identity Property of Matrix Addition. This property tells you what happens when you add a zero matrix to another matrix.