(e)
We prove (a) and leave the rest as exercises.
Proof (a) Let and ; then
Remark It is possible to extend part (a) of Theorem 10.2.3 to n terms and part (c) to n factors. More precisely,
Exercise Set 10.2
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In each part, find .
1.
(a)
(b)
(c)
(d)
(e)
(f)