Nikos Apostolakis <[EMAIL PROTECTED]> writes:

> Hello group,
>
> am I doing something wrong or is the following a bug?
>
> In [99]: limit(sqrt(x^2 + x +1) + x, x = -oo)
> In [101]: limit(sqrt(x^2 + x +1) + x, x = -oo)
[...]

It seems that by cutting and pasting I mangled the text. Sorry.  Here
is the relevant part of the sage session:

In [99]: limit(sqrt(x^2 + x +1) + x, x = -oo)
[...] error message ending in
Is  x  positive or negative?
In [100]: assume(x > 0)
In [101]: limit(sqrt(x^2 + x +1) + x, x = -oo)
[...] same error message as before
In [102]: sqrt(x^2)
Out[102]: -x
In [103]: forget()
In [104]: sqrt(x^2)
Out[104]: abs(x)


Nikos


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