hello, two quick question here. I've got the answer correct (I think), but I am not too sure how to explain it in words. So I hope someone tell me is my attempted explanation correct. 1) what is the maximum of non-zero eigenvalues a singular square matrix with 7 rows can have? up to and include 6, because we wee at least 1 eigenvalues that is 0, such that it will give the determinate of the matrix will be 0. Therefore the matrix can be a singular square matrix. 2)how many non-zero eigenvalues does a non-singular square matrix with 5 rows have? 5, because if any eigenvalues in a square matrix is 0, it will turn the matrix into a singular square matrix. by the way, I need some conformity on the idea, singular square matrix is bringing higher dimension matrix into lower dimension, such that it will not have any inverse right?