[Date Index]
[Thread Index]
[Author Index]
Re: Collect coefficients of array variables during calculation:
*To*: mathgroup at smc.vnet.net
*Subject*: [mg87015] Re: Collect coefficients of array variables during calculation:
*From*: Szabolcs Horvát <szhorvat at gmail.com>
*Date*: Sat, 29 Mar 2008 04:22:18 -0500 (EST)
*Organization*: University of Bergen
*References*: <fsib0m$5qe$1@smc.vnet.net>
Gopinath Venkatesan wrote:
> Hello Mathematica Friends
>
> If we have an array variable, and assuming after intermediate calculations, some equations are found to be below.
>
> eqn1=10. A[[1,1]]+b A[[1,1]]+c A[[1,2]]+3. A[[1,2]] (only for illustration)
>
> Simplify[] does not combine the coefficients under same array member, i.e. instead of (10.+b)A[[1,1]]+(c+3.)A[[1,2]], it is showing the earlier mentioned form.
>
> Is there a way to collect them and simplify them. But when I checked for simple cases, Simplify[] seems to work.
>
> Thanks for the suggestions.
A[[1,1]] evaluates to something if A is a compound expression. If A is
not a compound expression, then it is not correct to write A[[1,1]], and
Mathematica will print an error message.
So A[[1,1]] can never appear in the result of a successful calculation.
Prev by Date:
**Re: symbolic evaluation**
Next by Date:
**Number of monomials**
Previous by thread:
**Re: Collect coefficients of array variables during calculation:**
Next by thread:
** Re: Collect coefficients of array variables during calculation:**
| |