take the derivative and do ratsimp(%);
and it looks right to me.
----- Original Message -----
From: "Prof. Schnitzlein"
Date: Thursday, October 13, 2005 2:47 am
Subject: integration bug?
> Hi
>
> please take a look at the following code snippet.
> The first integration result is right, but not the second one.
>
> b + a x
> (%i2) INTEGRATE( - - - - - - -, x)
> d + c x
> a x (a d - b c) LOG(c x + d)
> (%o2) --- - ------------------------
> c 2
> c
> (%i3) EV(%, a = 1, b = F10, c = - 1, d = F10)
> (%o3) - x - 2 F10 LOG(F10 - x)
> x + F10
> (%i4) INTEGRATE(- - - - - - - , x)
> F10 - x
> (%o4) - 2 F10 LOG(x - F10) - x
>
> May be I am overlooking some details or is it simple an error?
>
> Klaus
>
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