Re: How can I assign variables
- To: mathgroup at smc.vnet.net
- Subject: [mg22592] Re: [mg22573] How can I assign variables
- From: "David Park" <djmp at earthlink.net>
- Date: Sun, 12 Mar 2000 22:55:35 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Mark,
Use either of these forms of solution:
Clear[B];
Bsol = DSolve[B'[t] == (10 - B - T) B, B[t], t][[1, 1]]
B[t_] = B[t] /. Bsol
B[t] -> t*(10*B - B^2 - B*T) + C[1]
t*(10*B - B^2 - B*T) + C[1]
Your function is now defined.
B[s]
s*(10*B - B^2 - B*T) + C[1]
This obtains the DSolve solution as a pure function.
Clear[B];
Bsol = DSolve[B'[t] == (10 - B - T) B, B, t][[1, 1]]
B[t_] = B[t] /. Bsol
B -> (C[1] + (10*B - B^2 - B*T)*#1 & )
t*(10*B - B^2 - B*T) + C[1]
>How can I do this
>
>If I evaluate the following
> DSolve[B'[t]==(10-B-T) B,B[t],t] I get {{B[t]-> t(10B -B^2 -Bt)
>+C[1]}}
>
>what must I do to have the answer on the right of the -> actually stored
>in B[t] so that I may use it in further calculations without having to
>cut and paste.
>
>regards
>
>mark G
>mathematica 4.0 Linux
>Mandrake 7.0
>
>
>--
>Heisenberg may have slept here
>------------------------------
>
>