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Mathematica : Recent Questions and Answers (Page 180)

Find answers to your questions about Mathematica or help others by answering their Mathematica questions.

NDSolve - interpolation or machine precision problem

For the following equations;$$begin{align}frac{partial text{NN}(t)}{partial t}&=-frac{(c timestext{Sigma})}{pitimes Ltimes text{Omega}^2} text{NN}(t) timestext{Phi}(t)-frac{text{NN}(t)}{text{Tau0}}+text{Wp}(t),frac{partial text{Phi}(t)}{partial t}&=frac{(ctimes text{Sigma})}{pitimes Ltimes text{Omega}^2}text{NN}(t) times(text{Phi}(t)+1)-frac{text{Phi}(t)}{text{Tauph}}end{align}$$and. $$begin{align}text{Wp}(t)=frac{(2 text{Ep})}{sqrt{2...

Asked on 01/28/2021

0 answer

Tutorial example NetTrain fails miserably with a GPU

I have been experimenting with GPU NetTrain on AWS now when Mma 12.2 supports remote batch jobs (I don't have an Nvidia GPU to try these things out otherwise). In...

Asked on 01/28/2021 by kirma

0 answer

How to Copy/Paste From Mathematica into Excel

Is there a simple way to copy/paste a table of data from Mathematica into Excel? I know I can Export the data, but copy/paste would be so much more convenient...

Asked on 01/28/2021

5 answer

How to change behavior of Echo or turn it off without removing it from code?

I wish to use Echo for output of intermediate results if an OptionValue I call verbose->True and neutralize it if verbose->False. I think this is useful when you need to...

Asked on 01/28/2021

0 answer

Integration that involves inverse of a big symbolic matrix

I have a $300times300$ symbolic matrix and I want to calculate its inverse matrix. It has been two days and Mathematica is still executing Inverse[T]. $T$ is the...

Asked on 01/28/2021

0 answer

Mathematica GPU occupancy is too high when the current page has high quality images

When Mathematica's current page contains a high-quality picture, the GPU occupancy rate will increase and the current page delay of Mathematica will increase( the software is slow to respond to...

Asked on 01/28/2021 by shrocat

1 answer

Sublist pattern matching

Is there any way to simplify the following pattern:{p___, {a___, x_, x_, b___}, q___} :> {p, {a, x, b}, q}Ie. where I remove duplicated elements within sublists? Edit: Just...

Asked on 01/28/2021 by Literal

4 answer

List Contour plot

My data for List Contour plot ranges from -30 to 2500. The contour plot i am getting fails to distinguish the highest or the lowest ranges. How can i make...

Asked on 01/28/2021 by Sangami Ganesan Santhi

1 answer

Error Training FeedForward Neural Network With Various Type of Variables

I built the following FeedForward NNnet = NetGraph[{CatenateLayer[], 200, DropoutLayer[], Ramp, 100, DropoutLayer[], Ramp , 100, BatchNormalizationLayer[] , LogisticSigmoid, 50, DropoutLayer[], Ramp, 2, SoftmaxLayer[]}, {NetPort["Input"]...

Asked on 01/27/2021 by user34018

1 answer

Selecting parts of 2d array based on x value

Given a 2d array such as x={{1,2},{2,3},{3,4},{4,5},{5,6}} how would I extract all pairs where the first value is between 2 and 4 such that xpart={{2,3},{3,4},{4,5}}? I need to do this...

Asked on 01/27/2021

1 answer

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