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Re: Solution[[1,1,2]] Brackets
*To*: mathgroup at smc.vnet.net
*Subject*: [mg46300] Re: Solution[[1,1,2]] Brackets
*From*: bobhanlon at aol.com (Bob Hanlon)
*Date*: Fri, 13 Feb 2004 21:57:11 -0500 (EST)
*References*: <c0hhi1$let$1@smc.vnet.net>
*Sender*: owner-wri-mathgroup at wolfram.com
$Version
5.0 for Mac OS X (November 19, 2003)
The version that I am running fails to solve for solution without some help
soln = DSolve[{n'[t]==k*n[t]}, n[t],t][[1]]
{n[t] -> E^(k*t)*C[1]}
solution = soln /.Solve[(n[t] /.soln /. t->1) == 500, C[1]]
{{n[t] -> 500*E^(k*t - k)}}
solution[[1]]
{n[t] -> 500*E^(k*t - k)}
solution[[1,1]]
n[t] -> 500*E^(k*t - k)
solution[[1,1,2]]
500*E^(k*t - k)
population[t_] = solution[[1,1,2]];
Bob Hanlon
In article <c0hhi1$let$1 at smc.vnet.net>, "alan b" <alan4100 at comcast.net> wrote:
<< I have been trying to figure out what is inside the solution[1,1,2]. For the
problem below.
For example,
solution=DSolve[{n'[t]==kn[t], n[1]=500}, n[t],t]
population[t_]=solution[[1,1,2]]
I gather that the first item of the solution[[1,1,2]] is for the first and
only curly item:{n't[t]==kn[t],n[1]=500}.
I assume the second item of solution[[1,1,2] is the first subitem of the
first curly bracket. The third item of solution [[1,1,2]] which is two
suppose to be for 2nd item of the first curly brackets. But it appears to be
not.
Is there a way for me to see the contents visibly of the solution[[1,1,2]]
each item at a time.
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