129a_ans_2.8 - Spring 2010 Answer of Section 2.8 2.8 #7 a....

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Unformatted text preview: Spring 2010 Answer of Section 2.8 2.8 #7 a. 3 b. infinitely many c. YES, because rref A p has non-pivot in the last column, hence p is a linear combination of columns of A. 2.8 #9 NO, because Ap = 0 2.8 #12 p = 3 and q = 4 2.8 #26 basis of Col(A) is 3 -2 -5 -2 -3 -2 1 0 0 , , -1 2 9 6 , 3 7 3 3 basis of N ul(A) is -5/2 -3/2 0 -1 1 2.8 #33 The matrix equation Qx = b always has unique solution for any b in R4 . ...
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This note was uploaded on 09/08/2010 for the course MATH 129A at San Jose State University .

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