Graphing Derivative on Numeric TI-Nspire compared to TI-84

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Kim

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Sep 28, 2012, 6:59:41 AM9/28/12
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To graph higher order derivatives on the TI-84, I have been able to the first and second derivatives of a function using the nderiv( button and nesting the commands.  When I get to the third derivative, I get the error of illegal nesting.
y1=f(x)
y2=nderiv(y1,x,x)
y3=nderiv(y2,x,x)
y4 = can't do

I can't graph beyond the second derivative using my numeric TI-Nspire.  I can using my CAS.

On my numeric I have tried d( from the Knowledge base.
I have tried nDerivative(
I have tried derivative(

ex.
f1(x)=x^3
f2(x)=nDerivative(f1(x),x)
I tried  f3(x) =nDerivativ(f2(x),x)


The commands will enter, but no result and no error message.

Can the numeric graph a second derivative by nesting commands?  If so what is the command?
I'm hoping that my numeric Nspire can do everything the TI-84 can do since that is what I tell my students, but maybe this is an exception.

John Losse

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Sep 28, 2012, 8:40:16 AM9/28/12
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Kim,

FYI:  On the 84, you can avoid the nesting error message by doing Y4=(Y3(X+0.001)-Y3(X-0.001))/(0.002), and something similar will probably work on the numeric, but this may not answer the real question.


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