llection of functions are provided for drawing vector diagrams in 2D and 3D, illustrating various concepts of linear algebra more concretely than has been available before. For example,</p>
<ul>
<li><p><code>showEqn(A, b)</code> shows the matrix equations <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mrow><mi>ùêÄ</mi><mi>ùê±</mi></mrow><mo>=</mo><mi>ùêõ</mi></mrow><annotation encoding="application/x-tex">\mathbf{A x} = \mathbf{b}</annotation></semantic