Page 367 - Elementary_Linear_Algebra_with_Applications_Anton__9_edition
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(a) (2, 3, −7, 3)
(b) (0, 0, 0, 0)
(c) (1, 1, 1, 1)
(d) (−4, 6, −13, 4)

     Find an equation for the plane spanned by the vectors            and .
15.

     Find parametric equations for the line spanned by the vector            .
16.

     Show that the solution vectors of a consistent nonhomogeneous system of m linear equations in n unknowns do not form
17. a subspace of .

     Prove Theorem 5.2.4.
18.

Use Theorem 5.2.4 to show that           ,                         ,            , and               ,

19. span the same subspace of .                                                                , and . Use
                                                                                                       are points
A line L through the origin in can be represented by parametric equations of the form       ,

20. these equations to show that L is a subspace of ; that is, show that if            and

on L and k is any real number, then and     are also points on L.

21. (For Readers Who Have Studied Calculus) Show that the following sets of functions are subspaces of
     .

         (a) all everywhere continuous functions

(b) all everywhere continuous functions

(c) all everywhere continuous functions that satisfy
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