This Week's Q&A: The Matrix Unloaded!

Posted On: April 10, 2009 12:55 pm

A. When charge transfer takes place, electrons are transferred from one material to another. Electrons have a very small mass but this mass is not zero.

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Q. How is cream separated from milk, which is an emulsion?

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Q. If a question is asked whether a matrix inverse existx or not then how do we check it?

Posted by: R_raj06

A. To check whether the inverse of the matrix exists or not, check the order of the matrix and then find the value of its determinant. Remember: determinant corresponds to a square matrix only. Inverse exists in case of non singular matrices. A singular matrix has its determinant equal to zero. If the matrix is singular then its inverse won't exist.

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