14. True or False: if the columns of}! are linearly:r dependent, then detA = D 15. True or False: The determinant of A is the product of the diagonal entries in A. 15. True or False: The column space of A is the set of all solutions of An: = b 1?. True or False: if a finite set 5 of nonszero vectors spans a vector space it then some subset of 5 is a basis for if 13. _ True or False: if H is the standard basis for R\". then the iii-coordinate 1irrector of some I in R\" is x itself 19. : True or False: The nullity of}! is the number of columns ofA that are not pivot columns