Discusses the pseudoinverse in the context of least squares problems. Properties of pseudoinverse and formulas for its calculation. Relates pseudoinverse to singular value decomposition.

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States and proves a long list of conditions equivalent ot the existence of a left, right, or two-sided inverse for a matrix.

Complete coverage of a difficult topic (change of basis for vectors and linear transformations) with easily remembered notations

This resource presents two methods of finding bases of sums and intersections of subspaces of \(R^n\).

This is a robust grapher with lots of options. It is focused on K-12, but has many capabilities that can be used by undergraduates.The site requires registration.

This collection of thirty Geogebra applets has been upgraded to use HTML 5, so they will run on tablets.

The applet is written in HTML5, so it is available on tablets. The applet gives the graph of a function and the integral is calculated as the signed area under the curve.

The applet is written in HTML5, so it is available on tablets. The applet uses wheels connected by belts to illustrate the Chain Rule.

The applet is written in HTML5, so it is available on tablets. The object is to identify which of three possible graphs represents the derivative of a function given by a graph.

The applet is written in HTML5, so it is available on tablets. The intuitive idea is the slope of the tangent, illustrated by the limit of secant slopes.