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Re: Eval and long format answer
Posted:
Nov 30, 2012 12:14 PM
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On 11/30/2012 11:09 AM, Nasser M. Abbasi wrote:
> On 11/30/2012 10:48 AM, Genevieve Masson wrote:
>> Hi :)
>>
>> How to avoid that type of answer (i mean how to evaluate the fractions) :
>>
>>>> Vg2
>>
>> Vg2 =
>>
>> acos(5784835530832562/5514948135819145 - (18014398509481984*((3937*sin(thCerc))/20000 - AE*sin(alpha))^2)
>>
>
> First you need numbers for those symbols you have there: thCerc,AE,alpha etc...
> use subs().
> Then you should be able to just use double() around the whole thing.
>
Also, you can try simplify on the symbolic expression. It helped
EDU>> syms thCerc AE alpha
EDU>> VG2=... what you had above...
EDU>> simplify(VG2)
acos(12389/11811 - (17592186044416*(3937*sin(thCerc) - 20000*AE*sin(alpha))^2)/390625)
--Nasser
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