X(PLORE) is a numerically based, programmable graphing calculator. It will do matrix calculations including eigenvalues and eigenvectors (and singular values), integrate and differentiate functions, and construct rectangular, polar and parametric graphs in two dimensions and rectangular and parametric graphs in three dimensions.

X(PLORE) is available from Prentice Hall, ISBN 0-13-014226-3 for the PC version and ISBN 0-13-014218-2 for the macintosh version. Each comes with a 200 page manual and can be ordered for less than $30.00 by calling (in the US) 1-800-947-7700.

Experimental Systems