MATLAB code not running

I am trying to run a very simple MATLAB script

A=[12,-3;-3,4]

A = 2×2

12 -3 -3 4

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C=[-9;9]

C = 2×1

-9 9

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sol = inv(A)*C

sol = 2×1

-0.2308 2.0769

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When I click the run button, it doesn't do anything. When I press ctrl+enter, the run button changes into a pause button, but nothing shows up in the command window. My workspace shows I created a variable "i" with a value of 25 and a 1x100 double "x", but I never did, and it won't let me clear them. It also will not let me create a new script. How do I fix this?

Answer 1

[Walter Roberson]

The most likely cause would be if you had a third-party function named inv

Check with

which -all inv

built-in (/MATLAB/toolbox/matlab/matfun/inv)
built-in (/MATLAB/toolbox/matlab/matfun/@double/inv)             % double method
built-in (/MATLAB/toolbox/matlab/matfun/@single/inv)             % single method
inv is a built-in method                                         % matlab.unittest.internal.fixtures.FolderScope method
inv is a built-in method                                         % matlab.automation.Verbosity method
built-in                                                         % gpuArray method
/MATLAB/toolbox/control/ctrlmodels/@InputOutputModel/inv.m       % InputOutputModel method
/MATLAB/toolbox/parallel/array/distributed/@codistributed/inv.m  % codistributed method
/MATLAB/toolbox/parallel/gpu/gpu/@gpuArray/inv.m                 % gpuArray method
/MATLAB/toolbox/symbolic/symbolic/@sym/inv.m                     % sym method

Experiment with using

restoredefaultpath; rehash toolboxcache

and trying again. If it does not start working, look more carefully for an inv.m function in your current directory.

[Benino]

okay, thanks. there was an infinite loop running. I don't know where it came from, but it's fixed now.