Expression evaluation

Question

I have got the following solution to an equation:

{{xc -> (2.54648*10^-6 (-555.653 Sqrt[-3306.94 + Exp] Sqrt[Exp] - 
      9.00829 Exp))/Exp}, 
{xc -> (2.54648*10^-6 (555.653 Sqrt[-3306.94 + Exp] Sqrt[Exp] - 
      9.00829 Exp))/Exp}}

How I can put Mathematica to evaluate the numerical value for this expressions of xc, because it seems that is not giving more than this for the moment?

Also what it means the Exp at the denominator and Sqrt[Exp]? It doesn't have any sense for me.

What is the equation you have solved? Probably there is a typo in the equation giving the Exp, with no arguments, in the solution. — Marius Ladegård Meyer, Jun 18 '15 at 09:08
Exp by itself will evaluate to Exp. Seems like you got some syntax / definition problem upstream. — Yves Klett, Jun 18 '15 at 09:30

score 2 · Answer 1 · answered Jun 18 '15 at 10:29

2

I think you wrote Exp in your equation where you should have written E. By substituting E for Exp in your answer, you would get

sol /. Exp -> E

{{xc -> -0.0000229394 - 0.0493323 I}, {xc -> -0.0000229394 + 0.0493323 I}}

Another possibility is that you wrote Exp(...) where you should have written Exp[...], in which case a simple substitution as shown above won't work. You will have to correct and resolve your equation.

answered Jun 18 '15 at 10:29

m_goldberg

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@m_goldberg Why these kind of questions are not deleted? IMO clearly syntax error related questions should be deleted to avoid cluttering search results. – ercegovac Feb 05 '17 at 20:39
@ercegovac. I don't have an answer. If you feel strongly about it, ask your question on Mathematica Meta – m_goldberg Feb 06 '17 at 05:33

Expression evaluation

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