[Maxima-bugs] [ maxima-Bugs-1309432 ] integrate(1/cosh(a*x)^2,x,-inf,inf);

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Bugs item #1309432, was opened at 2005-09-30 05:19
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: integrate(1/cosh(a*x)^2,x,-inf,inf);

Initial Comment:
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Maxima version: 5.9.1
Maxima build date: 16:35 2/10/2005
host type: i686-pc-linux-gnu
lisp-implementation-type: GNU Common Lisp (GCL)
lisp-implementation-version: GCL 2.6.6

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integrate(1/cosh(a*x)^2,x,-inf,inf);

Is  a  positive, negative, or zero?

p;
(%o3) 				       0

Correct answer is 2/a.

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You can respond by visiting: 
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