Limits question [Challenge]
\[\LARGE \lim_{x \rightarrow 0} \frac{(1+x)^\frac{1}{x} -e}{x}\]
@yrelhan4 @shubhamsrg
* :)
first time in life :O
Taylor Series expansion?
Use whatever you want.
Ans 0?
Nope
Taylor series works
Weird. The Taylor Series expansion is in the terms of \(e\) and \(x\). The first term is \(e\)
Taylor series gives 0?
gives -e/2 if you calculate correctly
Oh wait! lol, yeah. I forgot to consider that -e/2 which had no \(x\)
How about a different way rather than taylor series?
Definition of derivative? :-|
o.O
I was just thinking how this might be the definition of a derivative in disguise.
Binomial expansion might work ... but that's too long
DLS Use whatever you want. 15 minutes ago DLS How about a different way rather than taylor series? 9 minutes ago
You are right,still investigating for more methods,I wrote so to specify that you are not bound to any particular method,just asking if you know anything alternate :)
L'hopital works
http://www.wolframalpha.com/input/?i=Limit%5B%281+%2B+x%29%5E%281%2Fx%29+%281%2F%28x+%281+%2B+x%29%29+-+Log%5B1+%2B+x%5D%2Fx%5E2%29%2C+x+-%3E+0%5D after using L'hopital you get this expression. The first term tends to e .. if you again apply L'hopital on the second term, you will get -1/2
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