# Newbie question : plotting an integrated function

Hi everybody,
i'am very sorry about this basic question but i am trying to find the
easiest way to plot (with matplotlib, gnuplot, anything .... but not
Maple(tm)) an integrated function
For example, \int_{x}^{2x} \dfrac{1}{1+\atan(t)}dt ...
** I though i would do it using python and scilab : (as a newbie) i'am
still looking in the doc
** i tried SAGE : i don't understand if it's a maxima/octave/???
choice and how i can do it exactly
Can anybody give me a hint ?
Thanks a lot
P. Saadé
(PS : any software available in SARGE would be fine, but EDGE is ok too..)

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