MATLAB Answers

How to compute matrix ^ -0.5

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crixus on 16 Apr 2017
Commented: Andrew Newell on 17 Apr 2017
Hi, I would like to know how can I compute a matrix X^-0.5. I know that X^-1 is the inverse so in matlab should it be X^-0.5 or inv(X^0.5) ?


David Goodmanson
David Goodmanson on 16 Apr 2017
Hi c,
Matlab is short for Matrix Laboratory, and people can just try stuff out and see what happens. It's highly informative to take a small matrix like x = rand(5,5) and compare the results of two expressions above.
Andrew Newell
Andrew Newell on 17 Apr 2017
And then you can try multiplying the square of the result by X.

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