Solution to Simple Matrix Equation

Level: Undergrad
Thread starter lapo3399
Start date Oct 11, 2007
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Matrix

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lapo3399

Thread starter
Oct 11, 2007

If a matrix squared is equal to the original matrix, does that mean that the original matrix had to be either the zero matrix or the identity matrix?

Thanks.

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mathman

Science Advisor

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Oct 11, 2007

Not necessarily. Any diagonal matrix with ones and zeros along the diagonal will have this property.

Solution to Simple Matrix Equation

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