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tangent in turning point

• To: mathgroup at smc.vnet.net
• Subject: [mg48857] tangent in turning point
• From: Christian Christmann <plfriko at yahoo.de>
• Date: Sat, 19 Jun 2004 04:31:09 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

I'm looking for a software which can solve
the following problem:

I've measured some values for the velocity
of a test vehicle in a regular short period 
of time. Thus, I have pais of values (velocity
x in time t). I would like to use these values
to draw a graph and find then the turning point.
Hence, the program should draw a tangent through
the turning point.


Please tell me if mathematica is able to perform
this task and give me a short instruction for the
solution.

Thank you very much.

Best regards,

Christian Christmann