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Aug
29
revised Sensitivity of NonlinearModelFit to model
added 2 characters in body
Aug
28
comment How to Plot the PDF of Product of two Normals
There is a typo in your expression: remove the z before {x,-Infinity,….
Aug
26
comment Transfer function in recursive form
ASAIK TransformPairs is not an option for ZTranform?
Aug
18
revised How can I convert the solution I get from the DSolve to something I can use?
deleted 78 characters in body
Aug
18
comment How can I convert the solution I get from the DSolve to something I can use?
try '[Delta][t] /. s[[1]]' ,{t,0,n}
Aug
16
comment Extending NDSolve beyond a singularity
Very instructive and elegant.
Aug
15
comment Nearest Kronecker Product
Nice! That seems like a fairly general and useful function.
Aug
15
revised How to implement a more efficient inverse triangular recursion?
edited title
Aug
13
answered How to use Evaluation Monitor in conjunction with NonlineaModelFit?
Aug
13
comment How to use Evaluation Monitor in conjunction with NonlineaModelFit?
Trace[nlm = NonlinearModelFit[data, Log[a + b x^2], {a, b}, x, Method-> "Newton"],Log[__]]
Aug
12
comment Solve overdetermined set using Mathematica?
alternatively NMinimize[Plus @@ (sys /. Equal[a_, b_] -> (a - b)^2), {E0, x, y, a, b, c}]
Aug
11
comment Solve ItoProcess SDE
{processmean[t],processvariance[t]} are analytic AFAIK?
Aug
11
comment Solve ItoProcess SDE
What's wrong with 4th : show the theoretical path intervals?
Aug
11
comment Solve ItoProcess SDE
It seems the link on the right here does exactly what you want?
Aug
10
comment Why should the spatial derivative order of the ODE *not* exceed two?
Thanks. That sounds like a good idea.
Aug
10
accepted Why should the spatial derivative order of the ODE *not* exceed two?
Aug
9
revised Adding labels to graphics
deleted 84 characters in body
Aug
9
revised solving coupled differential equations with parameters subject to optimization problem
edited title
Aug
9
comment solving coupled differential equations with parameters subject to optimization problem
I guess I cannot help you unless you specify what x' mean? D[x[t],t]? D[x[a],a]? ??
Aug
9
revised solving coupled differential equations with parameters subject to optimization problem
added 2 characters in body