A question about Mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg34559] A question about Mathematica
- From: Chen-Ying Huang <chenying at ccms.ntu.edu.tw>
- Date: Mon, 27 May 2002 01:17:26 -0400 (EDT)
- Organization: Department of Economics, National Taiwan University
- Reply-to: chenying at ccms.ntu.edu.tw
- Sender: owner-wri-mathgroup at wolfram.com
Hi, I have a question about Mathematica and yet I couldn't find an answer to. Could you please consider giving me a help on this? This is not a long question and I hope it won't bother you too much. I was doing some computations. A computation gives me something like A/A, another computation gives me something like B/B. I then do a true-false statement, that is, If [A/A>=B/B, 1, 0]. Since both computations (A/A and B/B) equal to one, the statement is true and hence the If statement should lend a 1 as specified. However, I found out that the If statement lends a zero because somehow, in the computations, A/A is less than B/B by the order of 10 to the power of -16. Some friends told me that it must be because the bytes used by the computations A/A and B/B are different, so to correct this problem, I should assign the maximum byte to each object. Since I am not very familiar with Mathematica, after an afternoon's search, I still have no clue about how to do that. Could anyone give me a help on this? I really appreciate it. ChenYing Huang