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trap
Feb22-05, 12:57 AM
lim as x->infinity [e^x + x] ^(1/x)

Can anyone help me on this please, thanks.

dextercioby
Feb22-05, 01:24 AM
The limit is "e"...To convince yourself,use the fact that the limit & the natural logarithm commute.

Daniel.

trap
Feb22-05, 11:12 AM
can you take me one step further than that, to get the answer e?

trap
Feb22-05, 11:19 AM
i got it now, thanks for the help

dextercioby
Feb22-05, 11:31 AM
There would be another way to do it,directly,without use of ln .Just factor e^{x} and then use the definition of "e":
\lim_{u\rightarrow +\infty}(1+\frac{1}{u})^{u}=e

Daniel.