Re: TI-86 Calculator capabilities
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Re: TI-86 Calculator capabilities
1: are they not perpendicular, or do they LOOK like they are not
perpindicular? set the zoom to soom square (zsqr i think) as for the
other responses about negative reciprical slope, or negative x... the
only reason that y=x is perpendicular to y=-x is that the slope of x is
one, and the negative repicrical of 1 is -1. The response about y= mx
+b and y= (-1/m)x +b is correct in that respect.
2: yeah... nder(nder(nder(function)))
hope this helps
Mike Gagne wrote:
> Hello,
>
> Q1.
> When I graph 2 linear functions, each
> having a slope that is the negative
> reciprocal of the other, I end up with
> 2 lines that ARE NOT perpendicular to each
> other...I tried adjusting the scale of the
> x and y coordinates in the WINDOW screen
> without success( wouldn't a 1 to 1 scale
> between x & y work?). What's up???
>
> Q2.
> Is there a way to program the calculator
> to take a 3rd derivative, 4th derivative
> ...etc.???? And without writing a 50k
> program!!!
>
> At present, the only way I can
> check my Calculus problems involving
> 'greater-than' double derivatives("der2"),
> requires that I compare the calculators
> first derivative on the original
> expression at 'x' with my manually derived
> 1st derivative at 'x'...and simply repeat
> this process for deeper and deeper
> derivatives.
>
> Thanks...
> Mike gagne
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