I am considering purchasing Mathcad 2001 (not the latest release, Version 11, but the one before that), and I have posted a few questions regarding that purchase. I have one more question... I wanted to know if Mathcad 2001 can provide closed form solutions for at least some partial differential equations. I posted this question several places including Mathsoft's own "collaboratory" (their user-helping-user Web site). One or two people responded in the affirmative. However, Mathsoft's own people claim it does not. I know that sometimes tech support people are not always 100% accurate even about their own products (especially one that they no longer support or sell). And I'm just cynical enough to think that they might even deliberately mislead me, in an effort to get me to buy the latest version of the product. (I will not buy MC 11, because it requires Product Activation...) Anyway, the question is, can someone confirm that MC 2001 (not 2001i, but just 2001) does or does not provide closed-form solutions to PDEs? (I understand it won't solve all such equations, but it would help if it at least has the ability to solve some such equations, and related boundary value problems.) Thanks in advance for all replies. Steve O. Standard Antiflame Disclaimer: Please don't flame me. I may actually *be* an idiot, but even idiots have feelings.