This full solution covers the following key subjects: . This expansive textbook survival guide covers 57 chapters, and 1519 solutions. Since the solution to 21 from 5.6 chapter was answered, more than 254 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Elementary Linear Algebra with Applications, edition: 9. The full step-by-step solution to problem: 21 from chapter: 5.6 was answered by , our top Math solution expert on 01/30/18, 04:18PM. The answer to “Let S be an In x /I matrix with orthononnal columns b l. b2 ..... b". (a] Prove that II! 2: /I (b ) Prove that S f S = I” is broken down into a number of easy to follow steps, and 31 words. Elementary Linear Algebra with Applications was written by and is associated to the ISBN: 9780132296540.