Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Favorites infavorites:mine
infavorites:1234
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with Search options user 58104

Questions on the use of Mathematica to construct models for approximating empirical data.

0
votes
1answer
saw that the functions -Log[-x] + 1.5 + 3 x -1.5*Log[-x] were not so bad but I'd like to fit better... The command $Fit$ is not good for that kind of fitting, and Fitting one function to another doesn't look appropriate either. How could I proceed plz ? …
asked Jan 23 by J.A
1
vote
0answers
I got a list of numbers $x$: {152.5285260903254, 153.08990920351394, 150.5730994009649, 149.0795578315097, 150.88564540579486, 152.3019304735997, 152.37506265139996, 152.51287363037363, 156.842674754 …
asked Jan 24 by J.A
0
votes
1answer
I have some data : data={{9., 16.8895}, {12., 17.3404}, {15., 17.1633}, {18., 19.3417}, {21., 17.9899}, {24., 19.9677}, {27., 19.4362}, {30., 20.6519}, {33., 19.4591}, {36., 20.6855}, {39., 20.1952 …
asked Apr 12 by J.A
0
votes
1answer
I just made a NonlinearModelFit : nlm = NonlinearModelFit[data, {Piecewise[{{-(( n0 r - (lambda n0 R)/( lambda - lambda phiL + phiL R Coth[R]))/(-r + R)), r < 0}, {( lambda n0 R Csch[R/lamb …
asked Feb 4 by J.A
1
vote
0answers
tab1={{0., 1.92308}, {7., 11.5385}, {14., 36.5385}, {21., 75.}, {27., 123.077}, {35., 300.}, {42., 330.769}} tab2={{0., 0.}, {7., 3.41463}, {14., 7.80488}, {21., 17.561}, {27., 32.1951}, {35., 7 …
asked May 22 by J.A
8
votes
1answer
I know that there are already questions about fitting multiple datasets and about NDSolve and about shared and non shared parameters, but I tried to apply them and some things are still not clear …
asked May 24 by J.A
0
votes
1answer
I'm trying to fit some data with a system of differential equations : data={{6., 60.1536}, {9., 57.9807}, {12., 60.9089}, {15., 59.4291}, {18., 61.3227}, {21., 61.8788}, {24., 67.2192}, {27., 66.2767 …
asked Apr 15 by J.A
0
votes
0answers
So I have a very simple question related to a simple topic, but also directly related to a fitting problem. I see that my question is related to this question but I don't manage to make the bridge …
asked Jun 19 by J.A