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The link below takes you to the list of capsules in the subcategory Application: Least Squares under Linear Algebra within MAA'

The link below takes you to the list of capsules in the subcategory Applications: Dynamical Systems under Linear Algebra w

This is a "down-to-earth" brief introduction to linear algebra via problem-solving with matrices.

This seems like a versatile matrix calculator, but there is no list of available commands other than the few included in the Example.

A tool for finding properties of one matrix, such as multiple, power, inverse, determinants, characteristic polynomial, eigenvalues, and eigenvectors.
This resource is a tool for manipulating 2 matrices: any algebraic formula or solving a system of linear equations by matrix techniques.

For Single-Variable Calculus: Available online or as Android app. Very nice graphic calculator. Could be a very useful general tool for calculus students or instructors.

There are 2 excellent applets. (1) A student can perform row operations on a $$2 \times 3$$ matrix and see how the pair of lines change but the intersection point does not.
This applet puts a matrix in reduced row echelon form. A student types in a matrix, and it puts the matrix in RREF. The student does not have to think.

In this applet the user may change the entries in a $$2 \times 2$$ matrix and see it's effect on a square.