new to mupad help
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I thought I would try to learn mupad by solving a slightly confounded quadratic equation, which results after an equation substitution. My problem is, the answer mupad is giving me includes the variable that should have been eliminated. Could you look at the attached file and show to how to give the desired solution; it is probably simple for an experienced mupad user? I hard coded the desired equation at the bottom of the file; it does not include the eliminated variable. Thanks.
4 件のコメント
Walter Roberson
2015 年 6 月 14 日
Sorry, I can't read MuPad Notebooks. Screen capture please (and text form of the formula would be good)
回答 (1 件)
Martin Brown
2015 年 6 月 17 日
Hi, I think there are a couple of problems with the attached notebook
1) When I executed the individual commands (notebook - evaluate all), the Pavg in the final solution disappears, so it looks like you've got some previous working in the attached notebook. Just re-evaluate the commands
2) solve isn't giving a very helpful output. For some reason, it thinks your "eqn" variable is actually a relation, not an equation.
testtype(eqn, Type::Equation)
When you specify the equation as part of the solve command like
simplify(solve(-353/10*`Delta;P`*(`Delta;P`/2-P1)/Tavg = c, `Delta;P`));
You get roughly the answer you want. Putting decimals in gives the result in floating point format.
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