Getting "Execution of script roots as a function is not supported:" error

Hi,

I am trying to find the roots of an equation x = x^3 + 4*x^2 - 8* x -12

Below is my script:

x = [1,4,-8,-12];

y = roots(x)

I have saved this code in flie_3.m script and numming it and its giving me error as

"Execution of script roots as a function is not supported:"

Answer 1

[Kojiro Saito]

It seems you have another roots.m file which is different from MATLAB's built-in roots function.

Please check the following command

which roots -all

You will get custom roots.m (in bold) and built-in roots.m files.

<SOME_PATH>\roots.m

<MATLAB_ROOT>\toolbox\parallel\gpu\@gpuArray\roots.m % gpuArray method

<MATLAB_ROOT>\toolbox\matlab\polyfun\roots.m % Shadowed

Rename the custom roots.m file to such as myRoots.m.

[Saugyan Chapain]

Thank you. It was very helpful

[Azatha Reddy]

there is only file with that name which is the actual file and still it is showing the same error

[Prasannjeet Singh]

Facing the same issue. There is just one root file but still receiving this error. Could you help? Thanks.

[Walter Roberson]

What output are you seeing for

which roots -all

Answer 2

[McYvans Frank]

"Execution of script <psat> as a function is not supported: C:\Program Files\Polyspace\R2021a\toolbox\psat\settings.m"

For my case, I was adding psat library to Matlab.

Upon following this tutorial https://youtu.be/wqBHO2kzKB0, I realized person installed the library to a latter version 2016. So libraries are compatible to versions. Here's how I did to make mine work with 2021: -Downloaded and extracted PSAT 2.1.11 -Instead of following the path from video, kept the extracted PSAT folder in "picture" folder in desktop. I did drop in the toolbox folder and still got the same error, reason why I changed folder. -Follow same procedure to set path and everything -Created a new file and saved successfully.

[Walter Roberson]

What shows up for

which -all psat

[McYvans Frank]

The command gives the direction of storage of the psat library.

C:\Users\McYvans\Pictures\psat\psat.m