Calulation in lim (1 + 1 /n) ^n when n -> infinite

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Subject	Calulation in lim (1 + 1 /n) ^n when n -> infinite
From	Salvatore DI DIO <artyprog@gmail.com>
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Hello,

I was trying to show that this limit was 'e'
But when I try large numbers I get errors

def lim(p):
    return math.pow(1 + 1.0 / p , p)

>>> lim(500000000)
2.718281748862504
>>> lim(900000000)
2.7182820518605446  !!!!


What am i doing wrong ?

Regards

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Calulation in  lim  (1  + 1 /n) ^n  when  n -> infinite Salvatore DI DIO <artyprog@gmail.com> - 2015-11-09 04:21 -0800
  Re: Calulation in lim (1 + 1 /n) ^n when n -> infinite Chris Angelico <rosuav@gmail.com> - 2015-11-09 23:45 +1100
    Re: Calulation in lim (1 + 1 /n) ^n when n -> infinite Salvatore DI DIO <artyprog@gmail.com> - 2015-11-09 07:13 -0800
  Re: Calulation in lim (1 + 1 /n) ^n when n -> infinite Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-11-09 12:50 +0000
    Re: Calulation in lim (1 + 1 /n) ^n when n -> infinite Salvatore DI DIO <artyprog@gmail.com> - 2015-11-09 07:13 -0800
    Re: Calulation in lim (1 + 1 /n) ^n when n -> infinite Salvatore DI DIO <artyprog@gmail.com> - 2015-11-09 07:15 -0800
  Re: Calulation in  lim  (1  + 1 /n) ^n  when  n -> infinite Peter Pearson <pkpearson@nowhere.invalid> - 2015-11-09 17:51 +0000
    Re: Calulation in  lim  (1  + 1 /n) ^n  when  n -> infinite Salvatore DI DIO <artyprog@gmail.com> - 2015-11-10 00:26 -0800

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