Bugs in Mathematica v7

*To*: mathgroup at smc.vnet.net*Subject*: [mg95189] Bugs in Mathematica v7*From*: "Tugrul Temel" <temelt at xs4all.nl>*Date*: Fri, 9 Jan 2009 06:24:06 -0500 (EST)*References*: <200901081119.GAA14198@smc.vnet.net> <A511793E94C84AA5AD2B489799F24FA5@acerfcafbfa90d> <4965ED62.8090706@gmail.com>

Moderator Note - I asked the author to provide more detailed information related to the emails below. The notebook mentioned can be found at http://smc.vnet.net/testing.nb. ------- Attached please find the Mathematica code I am running. The bugs I mentioned arise sometimes and not necessarily in one run. I use Math v7. Regards, Tugrul Tugrul Temel wrote: > > Here is an example of a so called "bug". I write a variable name as "var1" > but when I run the code, the variable name becomes "var 1". There is a space > between "var" and "1" and hence Mathematica understands it as a > multiplication. A second and more serious problem is that I give an equation > like "x1==x^2 + (y1 + y2)" and after running the code the same quation turns > out to be: "x1==x^2*y1 + x^2*y2)". Namely, the (+) sign becomes a > multiplication. These problems do occur sometimes not all the time. > > I hope the problem now is clear. > > Regards, > Tugrul > > >> Date: Thu, 8 Jan 2009 01:31:23 +0100 >> >> Dear All, >> >> I just started to use Math v7 to run an economic model. I face a lot of > bugs >> in the program each time I run the model. Sometimes it is an invisible >> change in signs (like + or -) or in the form of incorrect expansion of >> simple equations. I am tired of looking for the bugs and correcting them. >> Some other times, the variable names are changed by putting space in > between >> letters that appear in the variable name. >> >> Please help... Do I do a mistake? Or is it a problem of the Math v7? >> >> Temel >> >> >> > >