leon.magiera at wp.pl writes:
> Dnia 2-01-2012 o godz. 14:28 Rupert Swarbrick napisa?(a):
>> leon.magiera at wp.pl writes:
>> > Problem 2
>> >
>> > ex:1/(sqrt((x-b)^2+a^2)*sqrt((x-b)^2/a^2+1));
>> >
>> > integrate(ex,x);
>> >
>> > Is the above integral too hard ?
>
> CAS DERIVE returns
> ATAN((x - b)/ABS(a))
Well, I'm pretty certain that you've either copied something incorrectly
or made another mistake. Look at the bottom of the integrand. It's a
product of two terms. One scales as a and the other as 1/a. Therefore
the product doesn't have any first-order dependence on a and the derive
answer you give above can't possibly be right.
Maybe I've misunderstood your original question?
Rupert
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