MATLAB: My “roots” command is not working and displaying an error (MATLAB 2017a) ver.

MATLABMATLAB and Simulink Student Suiteroots commandscript roots

I want to find the roots to a cubic polynomial and I' trying to use the roots command but an error keeps on recurring. Here's what I did:

1- clc

2- p=[1 -20 -525 63];

3- r=roots (p)

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Following errors keeps on displaying:

Attempt to execute SCRIPT roots as a function:

C:\Users\Haziq Zaheer\OneDrive\Documents\MATLAB\roots.m

Error in roots (line 3)

r=roots (p)

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Any leads on how can I fix it, please?

Best Answer

You are running your own roots.m SCRIPT, not the MATLAB roots() function.

Related Solutions

MATLAB: “roots” function not working

You have a variable named roots. Do this :

clear roots
p = [1 -6 -72 -27];
r = roots(p);

Don't name variables after built-in MATLAB functions. (And especially don't blame MATLAB for your silly mistakes ;-))

MATLAB: Problem with “roots” command

Root = roots(...) %Not saving output correctly here

This will override the value of Root every iteration, resulting in a 3x1 matrix. To save the results of each iteration, you need to change where the data is saved to in Root.

Root = zeros(3, 6);
for u = 1:6
  Root(:, u) = roots(...);
end

Best Answer

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MATLAB: “roots” function not working

MATLAB: Problem with “roots” command

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