This course, presented by MIT and taught by professor Gilbert Strang, provides a review of linear algebra. Topics include differential equations of equilibrium; Laplace's equation and potential flow; boundary-value...

Learn how to make waves of all different shapes by adding up sines or cosines. Make waves in space and time and measure their wavelengths and periods. See how changing the amplitudes of different harmonics changes the...

This resource from Johns Hopkins University has audio and interactive components. Various forms of the Fourier series description for periodic signals are based on alternate ways of writing a cosine signal. This resource...

The Open University had long been dedicated to the proposition of providing high-quality educational materials for persons all over Britain and the world. They were one of the first universities to place such materials...

This interactive phasor page allows you to control the values of a rotating phasor and see a visualization of each change that is done. You can control: one, pos/neg, two, beats, delta, sawtooth, square, triangle, time,...