You are not logged in.
Post a reply
Topic review (newest first)
- bob bundy
- 2012-11-13 05:29:24
hi mathteacher005
Welcome to the forum and thanks for the link.
I will convert your post so that the expression is in Latex and the link easier to use.
numberempire.com/limitcalculator.php?fu … =two-sided
Bob
- mathteacher005
- 2012-11-13 01:26:50
Hello! The answer is \lim_{x\to\infty }\left({{2\,{\it cx}+1}\over{1-2\,{\it cx}}}\right)^{{{1}\over{x}}} = 1.
You can check it here.
numberempire.com/limitcalculator.php?function=%28%281%2B2%2Acx%29%2F%281-2%2Acx%29%29%5E%281%2Fx%29&var=x&val=inf&answers=&limit_type=two-sided
My friend show me few weeks ago and now my students always use it for checking the answers:) Good Luck!
- bobbym
- 2012-11-08 08:01:57
I use Schick's or Gillette's razor for a better shave.
- anonimnystefy
- 2012-11-08 08:00:10
Being simplest doesn't makng true. And, yes, I am familiar with the Occam's razor.
- bobbym
- 2012-11-08 07:55:33
Isn't the simplest typo that she wrote 4 when she meant 1?
- anonimnystefy
- 2012-11-08 07:53:17
This looks too much like a book problem. I do not think that is what it wants.
- bobbym
- 2012-11-08 07:48:42
Maybe the questioner just wants the OP to see that the answer is 1. To spot the inconsistency.
- anonimnystefy
- 2012-11-08 07:45:48
Yes. So I am thinking that it might be a typo of the function whose limit is being taken.
- bobbym
- 2012-11-08 07:40:18
anonimnystefy wrote:
The first limit is 1 for every c.
There is no c that will give a limit of 4. You said so yourself. The limit is independent of c. That is why it is trivial.
- anonimnystefy
- 2012-11-08 07:36:30
Not really. The question would be close to trivial. I think the question is more likely to be asking for the constant c for which a limit has the value 4 and then finding the same limit but with 2c instead of the c, whose value we now know.
- bobbym
- 2012-11-08 07:33:30
But doesn't it follow?
- anonimnystefy
- 2012-11-08 07:25:20
I don't think that is the misprint.
- bobbym
- 2012-11-08 06:27:03
Yes, it should read 1 instead of 4.
find the limit of ((1+2cx)/(1-2cx))^(1/x) as x tends to infinity
So the answer should be 1 because 2c=c.
- anonimnystefy
- 2012-11-08 06:20:27
Maybe it is a misprint or a typo.
- bobbym
- 2012-11-08 05:21:06
Hi;
That is what I am getting, so the question does not make any sense.