Well this one looks very interesting, it looks pretty obvious but I can't find a way to prove it formally:

Let a,b,c be positive numbers.

Prove:

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- Nov 28th 2009, 03:50 AMadam63Limit of a sequence - nice one
Well this one looks very interesting, it looks pretty obvious but I can't find a way to prove it formally:

Let a,b,c be positive numbers.

Prove:

- Nov 28th 2009, 04:16 AMBacterius
Try to define mathematically what is (I believe it is the greatest of these numbers ?). You can't just leave a verbal operation in your limit, you must express it in algebraïc operations. It might be easier (Wondering)

- Nov 28th 2009, 04:44 AMPlato
- Nov 28th 2009, 05:40 AMchisigma
Let's suppose that and [othervise you can always swap the variables (Nod) ... ]. Because is...

(1)

... and...

, (2)

... from (1) and (2) we derive...

(3)

Kind regards

- Nov 28th 2009, 05:43 AMadam63