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Possible to zoom in/out of a graphics output?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg17517] Possible to zoom in/out of a graphics output?
  • From: kalina at teleweb.at (Michael Kalina)
  • Date: Mon, 10 May 1999 19:53:20 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Hi!

Thanks for the fast answers and for the good help to my questions before...
Now another one:
In school we use both Mathematica and a much simpler math program.

In that program it is possible (with a simple click) to zoom in and out
(graphics) - is this possible in Mathematica (2.2) too?

And another question: (I do not know the exact word for it in english but in
german it is "Kurvendiskussion") - Therefore I show this example. Everything,
what is marked with a '!!!' I would like to do Mathematica alone (or maybe
there is a Macro to download somewhere):

[My Input] f(x): y=4x/(x^2+1)
[What M should do:]
[!!!] x^2+1=0 --> not possible - there is no "Tangente" (in german) parallel
to the y-axis.
[!!!] y=0 --> possible "Tangente"
[!!!] N: 4x=0 --> x=0 --> N(0/0)
[!!! I know that this somehow works with D[...]] f'(x):
y=4x(2x^2-6)/x^2+1)^3
[!!!] Solvle points like: "turning point", ...



Thanks, Michael
PS.: ...and what's the word for what I did in the example?


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