LFD Book Forum Problem 2.14(c)
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11-11-2019, 05:19 AM
 joseqft Junior Member Join Date: Dec 2015 Posts: 1
Re: Problem 2.14(c)

I´ve been struggling with this problem too. Essentialiy we have to prove that the second expression in the min expression

.

is a valid as explains magdon in

Quote:
 Originally Posted by magdon Rather than solve the inequality in (b) to get this bound, you may rather just verify that this is a bound by showing that if , then the inequality in (b) is satisfied, namely .
this means that the inequality

(1)

must be satisfied.

I have been finding upper bounds to the right hand side of (1), using the following tricks

if (the case must be proved apart).

,

, because (this is not the seven in the exponent) and

.

Then we arrive at an expression that can be compared easily with the left hand side of (1) proving that this inequality is valid.

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