On Thu, Aug 21, 2008 at 11:11 PM, William Stein <[EMAIL PROTECTED]> wrote:
>
> On Thu, Aug 21, 2008 at 8:09 AM, William Stein <[EMAIL PROTECTED]> wrote:
> > On Thu, Aug 21, 2008 at 4:44 AM, Andelf <[EMAIL PROTECTED]> wrote:
> >> I am a starter, so
I am a starter, so I don't understand why this goes wrong
I typed:
x = var('x')
f = log(2+sqrt(arctan(x)*sin(1/x)))
lim(f, x=0)
and got:
Traceback (click to the left for traceback)
...
Is sin(1/x)*atan(x) positive or zero?
actually I should get a log(2).
who can help me explain it?
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