Re: TI 89 and integrals


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Re: TI 89 and integrals



Yeah, this is really wierd...
I tried a lot of things, and it did not work... And the most interesting
thing, I guess, is that id you differentiate the thing it outputs you get
another wierd thing... Maybe it is because of the way the trig-identities
are defined in the calc?
Mark

Alex Simma wrote in message <36b0aad4.9044501@news.flash.net>...
>I've found that sometimes, the TI-89 gives absurd answers that are
>right.  For example, if I take the integral of (tan x)^6*(sec x)^2 the
>answer should be 1/7*(tan x)^7 However, the calculator pumps out some
>long and complex value.  Nevertheless, it is equivilent to the answer.
>Does anyone know how to get the condenced value?  And no, tCollect
>didn't do it.Hmm.


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