[Maxima-bugs] [ maxima-Bugs-1713067 ] limit/integrate wrong

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Bugs item #1713067, was opened at 2007-05-04 12:36
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Stavros Macrakis (macrakis)
Assigned to: Nobody/Anonymous (nobody)
Summary: limit/integrate wrong

Initial Comment:
limit('integrate(t,t,0,x)/x,x,inf);
Is  'limit('integrate(t,t,0,x),x,inf)  positive, negative, or zero?    pos;

        =>  0

Of course the correct answer is INF, since 

    integrate(t,t,0,x)/x == x/2

More complicated examples (correct answer is INF)

limit(integrate(t/log(t),t,2,a)/a,a,inf) => 0
limit(integrate(t/log(t),t,x,2*x)/x,x,inf) => 0


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Comment By: Nobody/Anonymous (nobody)
Date: 2007-05-04 13:34

Message:
Logged In: NO 

Maybe you should try your 1st example without "'" before "integrate":
limit(integrate(t,t,0,x)/x,x,inf); gives the correct answer!

And for your ´more complicated´ examples:
What other answers do you expect, when Maxima isn´t able to solve the
definite integrals???


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