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2017 Dec 20
1
Nonlinear regression
G'day Timothy, On Tue, 19 Dec 2017 18:28:00 -0600 Timothy Axberg <axbergtimothy at gmail.com> wrote: > Should I repost the question with reply-all? Nope, we got all from Jeff's post. :) > On Tue, Dec 19, 2017 at 6:13 PM, Jeff Newmiller > <jdnewmil at dcn.davis.ca.us> wrote: > > > You also need to reply-all so the mailing list stays in the loop. > >
2017 Dec 20
1
Nonlinear regression
You also need to reply-all so the mailing list stays in the loop. -- Sent from my phone. Please excuse my brevity. On December 19, 2017 4:00:29 PM PST, Timothy Axberg <axbergtimothy at gmail.com> wrote: >Sorry about that. Here is the code typed directly on the email. > >qe = (Qmax * Kl * ce) / (1 + Kl * ce) > >##The data >ce <- c(15.17, 42.15, 69.12, 237.7, 419.77)
2017 Dec 20
0
Nonlinear regression
Should I repost the question with reply-all? On Tue, Dec 19, 2017 at 6:13 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote: > You also need to reply-all so the mailing list stays in the loop. > -- > Sent from my phone. Please excuse my brevity. > > On December 19, 2017 4:00:29 PM PST, Timothy Axberg < > axbergtimothy at gmail.com> wrote: > >Sorry about
2017 Dec 19
3
Nonlinear regression
Hello, I am working on a small data set and trying to find values of Qmax and Kl for the equation qe = (Qmax * Kl * ce) / (1 + ?l* ce) I found my Qmax and Kl through the linear model butam now trying to find them through the "nls" function however an error comes up that I am unfamiliar with. I have the file loaded for reference. Any help is appreciated. Thank you. -Timothy
2017 Dec 19
1
Partial differential equation
Hello, I am having troubles with heat conduction problem. Below is the given information. Should I move forward with this problem like any other 1-D PDE? ?T/?t = a* (?^2T/?x^2) I.C. For t = 0 and 0 ? x ? 10, T = 0 ?C B.C. For x = 0 cm and all t , T = 100?C For x = 10 cm and all t , T = 0 ?C The thermal diffusivity is a = 2.0 cm^2 /s. I also added what I have for code in R. Any help will