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22. (For Readers Who Have Studied Calculus)

Let and be continuous functions, and let V be the subspace of                            consisting of all twice

differentiable functions. Define     by

(a) Show that L is a linear transformation.

(b) Consider the special case where          and               . Show that the function                                is in the

       nullspace of L for all real values of and .

23. (For Readers Who Have Studied Calculus)

Let    be the differentiation operator                         . Show that the matrix for D with respect to the basis

       is

24. (For Readers Who Have Studied Calculus)
     It can be shown that for any real number c, the vectors

     form a basis for . Find the matrix for the differentiation operator of Exercise 23 with respect to this basis.

25. (For Readers Who Have Studied Calculus)
     Let be the integration transformation defined by

where                             . Find the matrix for T with respect to the standard bases for and .

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