When I tried to use lratiotest. I get an error message 'Undefined function 'lratiotest' for input arguments of type 'double'.'
I've look up these kind of problem, most answers were about changing the path so that the function is actually in the path. But as lratiotest should be a bult-in function. I don't know what is wrong. And I've also tried install the matlab again with all packages and toolbox, but still has this error.
how can i slove this problem?
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