Re: A89: AP Calculus
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Re: A89: AP Calculus
I think the 89 fails slightly in its algebraic generaly..
take this simple one:
((x-x^3)/(x^3+x^2))/((x^2-2x+1)/(x^2-2x)) (example from a book I have)
the 89 solves it very correctly to: -(x-2)/(x-1)
but a much nicer way to write this is: (x-2)/(1-x)
and what is much more important,
he forgets to tell me that x can't be -1, 0 or 2.
//Olle
Zoltan Kocsi wrote:
>
> > > sin^2(x)
> >
> > Um, try (sin(x))^2.
>
> Well, thanks :-)
> I know how to enter it to the calculator - I wasn't mentioning
> syntax errors, was I ? I wrote sin^2(x) because that's how a textbook
> would write it (at least the ones I read :-):
>
> 2
> sin x
>
> and I was talking about a trivial algebraic transformation, not actual
> numeric calculation.
>
> Regards,
>
> Zoltan
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