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omnia

problem in using symbols

Asked by omnia
on 7 Dec 2011

Hi everyone I have a problem in my program. I have a symbol called 'f' in an equation when I write (3*10^-12)/(1-f) it is written in the command window as '1/(1237940039285380274899124224/3713820117856141-1237940039285380274899124224/3713820117856141*f_ES)'which is the same value but in much complex form. How can I make the program write it in the simple form? I use this equation in the remaining of the program and it become much harder to follow and calculate.

thanks

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1 Answer

Answer by Paulo Silva
on 7 Dec 2011
doc vpa  %just a wild guess of something that might be useful to you

  5 Comments

omnia
on 10 Dec 2011

try to do the following in the command window:
syms f
(3*10^-12)/(1-f)
the result will be :
3713820117856141/1237940039285380274899124224/(1-f)

this complex form prevent me from following the program. How can I make MATLAB write it as the above simple expression I entered ??

Walter Roberson
on 10 Dec 2011

omnia, use

vpa((3*10^-12)/(1-f))

omnia
on 16 Dec 2011

thanks Walter. It worked.


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