How to determine the identity matrix of order n.
How to determine whether two matrices are inverses.
How to multiply matrices.
How to use simple matrix operations.
How to convert a system of linear equations into a matrix equation and solve it.
How to use matrices to solve a system of equations.
How to find additive and multiplicative inverses.
How to determine whether two matrices can be multiplied, and if so, what the dimensions of the product will be.
How to determine whether a square matrix is invertible using its determinant.
How to use matrices to solve a system of linear equations.
How to talk about matrices.
How to use the unit circle to derive the tangent identity and the Pythagorean identity.
How to define an inverse.
Understanding the inversion of waves.
How to tell if two variables vary inversely.
How to compute the determinant of a 2x2 square matrix.
How to use algebra to show that two functions are inverses.
How to restrict the domain of sine so it will have an inverse function.
How to restrict the domain of cosine so it will have an inverse function.