Re: question about the 86 and the 89
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Re: question about the 86 and the 89
It is obvious, because for x=56 the lines on the two sides of the equation
never
intersect, and hence do not define y(x) implicitly. The questioner was simply
testing the student's remembrances about implicit functions.
--
Bob Wheeler --- (Reply to: bwheeler@echip.com)
ECHIP, Inc.
Kasper Vibe Grevsen wrote:
> >> "Find the tanget line for the fifth derivative of
> > y^9-6x^3=59(x^2)(y^4) when
> >> x=56."
>
> >Ehm .. do you need a calculator at all to solve this problem . Looks pretty
> > simple to me.
>
> Anyway, how do you solve this w/wo a calculator... I see no way to solve for
> y (and Derive could not do it either)
>
> You should use the expression t: y=y''''''(56)*(x-56)+y'''''(56) shouldn't
> you??
> But finding y'''''' and y''''' require you to solve for y or?
>
> I'm just curious because I've never seen such problems in Denmark... we
> struggle with diff eqs, vectors, anti-derivatives, ...
>
> Kasper Vibe Grevsen
>
> PS: Do you know where to find a comparison of the different math levels? In
> Denmark we have level A, B and C where my level A is the best. We do have no
> SAT, PSAT, *SAT, ACT, Algebra I/II, Calculus I/II, where do I find an
> explanation of these terms?
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