If your work involves math that can't easily be done in a spreadsheet, MathCad 6.0 from MathSoft (617 577-1017) may be the tool for you. Both the Standard ($129) and programmable Plus ($349) versions let you do complicated numerical or symbolic calculations on a sort of computerized scratch pad. Results can then be pasted into other Windows applications. While less sophisticated than computer algebra systems such as Wolfram Research's Mathematica, MathCad is much easier to learn and use.

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