Answered
Does Symbolic Math Toolbox Formally Support Function Composition?
This is not legal: syms f(x) g(x) h(f, g) = f + g

21 days ago | 0

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Answered
no correct reaction time or button press possible
Using tic/toc will not accurately measure reaction time. I would recommend that you use methods from the third-party Psychtoolb...

21 days ago | 0

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Table with multiple types
PType = 'R'; PData = uint32(391); app.LicksTable.Data = [PType,PData] app.LicksTable.Data The [] operation between a char an...

22 days ago | 0

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In R2024b, handles(33) throws an error. In R2023b in returns a structure if there is a figure 33. Is there a workaround in R2024b?
try figExists = isempty(fields(handle(33))); catch ME figExists = false; end It turns out that uifigure() can have a...

22 days ago | 0

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Can someone open this example?
I can open it in R2024b on MacOS Intel (with 'help' configured for 'web' rather than installed locally) I can open it in R2025a...

25 days ago | 0

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Error using assignin in a nested m function
testit() function testit inner() function inner syms q end end When you have nested functions, the wo...

25 days ago | 0

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Answered
MathWorks Licensing Error 83 Your license server is not configured for this release of MATLAB. We already have the license.dat for R2025b_Update_1
You need lmgrd 11.19.7 https://www.mathworks.com/support/install/license_manager_files.html

27 days ago | 2

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field name to string
When MATLAB encounters a.b in a calling sequence, then the "a" portion gets dereferenced, and the anonymous memory for "b" gets ...

28 days ago | 0

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How to run spsConversionAssistant?
Note that if you install R2025b Update 1, then Specialized Power Systems is restored; invoke sps_lib to see it in the library br...

1 month ago | 0

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Answered
How to create a very large array with an incremently named variable?
Don't Do That. If you are loading arrays from a single .mat file, then instead of using load FILENAME use STRUCTURE = load(F...

1 month ago | 0

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Answered
In the new version, the Simulink library function update is no longer available. How can it be replaced?
SPS is back in R2025b Update 1. (You might have to command sps_lib to see it.)

1 month ago | 0

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Extracting coefficients from symbolic expression
syms P121 P131 P151 P122 P132 P152 cosd sind cosdphi12over2 cosdphi13over2 cosdphi15over2 sindphi12over2 sindphi13over2 sindphi1...

1 month ago | 1

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Can i still use MATLAB for free after the free 30-day trial?
You can use MATLAB Online for 20 hours per month without any active license. I am not sure if that gives you any Simulink acces...

1 month ago | 0

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solve function depend on z
You can divide res by s^4, and you can then substitute s = sqrt(S), and then collect on S. You will obtain a degree 7 polynomial...

1 month ago | 0

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Answered
How to apply a generated filename to the mex command?
script_version = "8_1"; process_filename = strcat("myfile", script_version, ".c"); mex(process_filename)

1 month ago | 0

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Answered
unable to add namespace folder +toml to the project path
https://www.mathworks.com/help/matlab/matlab_oop/namespaces.html To be accessible to MATLAB, the parent folder of the namespac...

1 month ago | 0

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I've TI Launchpad 28379D and TI BOOSTXL-K350QVG-S1 display. I'm using simulink and would like to display voltage and current reading to TI LED screen. How would I go about it?
Fork the ADC pin output. Use Compose String https://www.mathworks.com/help/simulink/slref/composestring.html to put in the "Stri...

1 month ago | 0

Answered
How can I extract the time length (in miliseconds) between two audio signals?
You can use https://www.mathworks.com/help/audio/ref/detectspeech.html or https://www.mathworks.com/help/audio/ref/voiceactivity...

1 month ago | 0

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I am getting the following error
Most likely, you have one too many end statements I recommend using the editor facility "Smart Indent", which I believe has sho...

2 months ago | 0

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Defining Global Variables in the function
function out = Area_Integral(k, rho_0) global k rho_0 When you receive a parameter into the same name as a global variable, t...

2 months ago | 0

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Answered
I can't find the powergui block and components like a full-bridge MMC. I'm using MATLAB 2025b, yet I don't see that I have Specialized Power Systems in Simscape Electrical.
It is gone in R2025b. There are reports that it will re-appear in R2025b Update 1, but that is not confirmed. Also it appears...

2 months ago | 0

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Answered
can u ans me what should i do now from bolded wave to normalwave
The "bolded wave" (the one in yellow) has a high frequency component. For example, t = linspace(0,2*pi,500); y = sin(t) + sin(...

2 months ago | 1

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code cache is full and Matlab crashes
This appears to be related to Java. https://poonamparhar.github.io/codecache_is_full/ I would recommend checking that you hav...

2 months ago | 0

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Answered
How come my Daq Session isnt continous?
You are telling the daq session to stop. That stopping happens near immediately after the stop() call is encountered. Remember ...

2 months ago | 0

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give me an new MATLAB license file please
Or contact Mathworks Support, raising an Installation problem.

2 months ago | 0

Answered
Please help me, i would to make the color of the run 3D figure as the color of attached figure
x=-20:0.1:20; t=-15:0.1:15; [X,T]=meshgrid(x,t); omega=0.11 ;b=0.01; sig=sqrt(omega-10*b); alfa=0.1; a=0.1; k=alfa/a; c=-(alfa...

2 months ago | 0

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Answered
Why my plot does not correspond to real values?
Notice that the y axis goes up to 10^10. You have some early values that go up to roughly 22*10^10 and those early values are se...

2 months ago | 0

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Answered
Function output not displayed on scope.
The scope would show the output signal. The output is after the for loop has run. So the scope would show the final X, final Y, ...

2 months ago | 0

Answered
I cannot install or find Specialized Power Systems in MATLAB R2025b.
Simscape Specialized Power Systems is gone (without notice), and is unlikely to be back. See https://www.mathworks.com/matlabce...

2 months ago | 1

Answered
How to multiply different size arrays and multiply each element by each element?
Vh = ((Span(:) .* ((1 - reshape(Ct,1,[]))+1).*reshape(MAC,1,1,[])/2) .* reshape(CoM,1,1,1,[]))./(WingArea.*WChord); assuming th...

2 months ago | 0