MATH 21B Study Guide - Midterm Guide: Eigenvalues And Eigenvectors, Rotation Matrix, Orthogonal Matrix
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Tth 10 morgan opie: please ll in your name and mark your section, try to answer each question on the same page as the question is asked. If needed, use the back or the next empty page for work. If you need additional paper, write your name on it: do not detach pages from this exam packet or un- staple the packet, please write neatly and except for problems 1-3, give details. Answers which are illegible for the grader can not be given credit: no notes, books, calculators, computers, or other. Tth 10 rosalie belanger-rioux electronic aids can be allowed. Tth 11:30 alison miller: you have 90 minutes time to complete your work. If a is a non-invertible n n matrix, then det(a) 6= det(rref(a)). If the rows of a square matrix form an orthonormal basis, then the columns must also form an orthonormal basis.
