Math 217: True False Practice

Math 217: True False Practice Professor Karen Smith 1. A square matrix is invertible if and only if zero is not an eigenvalue. Solution note: True. Zero is an eigenvalue means that there is a non-zero element in the kernel. For a square matrix, being invertible is the same as having kernel zero. 2. If Aand Bare 2 2 matrices, both with eigenvalue 5, then ABalso has eigenvalue 5. Solution note ... ................
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