Examples 6.5.10(c): |
Use the Mean Value theorem to show that |
.
Then f is continuous on [0,
)
and differentiable on (0,
).
By the Mean Value theorem there exists a number c such that
for c between x and x + 1. But then= f'(c)
0 <As x goes to infinity, so does c (it is always bigger than x). The left side of this equation goes to 0 as c goes to infinity. Therefore, the right side must also go to zero.-
= 1/2 * 1 /
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