Solution 18 (b).
Solutions.
Sequence (i). For
the sequence
we
have
Therefore,
is
valid for
.
Sequence (ii). For
the sequence
we
have
Therefore,
is
valid for
.
Sequence (iii). For
the sequence
we
have
Therefore,
is
valid for
.
Sequence (iv). For
the sequence
we
have
Therefore,
is
valid for
.
We are done.
Aside. We can let Mathematica double check our work.
This solution is complements of the authors.
(c) 2008 John H. Mathews, Russell W. Howell