Re: TI 89 and integrals
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Re: TI 89 and integrals
Sometimes you can use tcollect or a few other commands to reform an
answer given by the 89/92, but there is no single guaranteed way to do it.
Basically the 92 calculates these things in a completely different manner
than we do on paper. So strange but equivalent answers do occur often with
complicated equations.
>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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