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Mathematics 22 Online
OpenStudy (anonymous):

I have a question involving limits

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

I'm sure you do. . . ! Lol.

OpenStudy (anonymous):

\[ \lim_{h \rightarrow 0 } (1+h)^\ln(1+h)-1/h\]

OpenStudy (yuki):

shoot it

OpenStudy (anonymous):

the ln(1=h) is all together as a power

OpenStudy (anonymous):

the ln(1+h) rather

OpenStudy (anonymous):

it looks like the definition of a derivative... almost

OpenStudy (yuki):

is it \[\lim_{h \rightarrow 0} ((1+h)^{\ln(1+h)}-1 )/h\] ?

OpenStudy (anonymous):

someone asked this earlier. but use L'hopital's rule and get an indeterminate form of 0/0 by deriving the numerater and denomenator seperately

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

do that and u'll get ur answer. Tell me what you get cuz I don't wanna just give u the answer

OpenStudy (anonymous):

sounds good to me!

OpenStudy (anonymous):

medal pwease

OpenStudy (yuki):

lol

OpenStudy (anonymous):

i got it to be 0/0 but i don't know where to go exactly from there

OpenStudy (anonymous):

thats ur answer

OpenStudy (anonymous):

ohhh, that easy haha. thanks pointing me in the right direction!

OpenStudy (anonymous):

0/0 is the answer?

OpenStudy (anonymous):

No, 0/0 is an indeterminate answer. If you get a limit in the form of 0/0, you have to use l'Hopital's rule -- if limit of f(x)/g(x) as x ----> infinity = 0/0 or infinity/infinity, then that same limit equals the limit of f'(x)/g'(x). (The limit of the ratio of two functions giving 0/0 or infinity/infinity = the limit of the ratio of their derivatives).

OpenStudy (anonymous):

looks like its back to the drawing board for me then!

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