MathGroup Archive: March 2012 [00336]

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Different answers in mathematica and my calculator.

To: mathgroup at smc.vnet.net
Subject: [mg125578] Different answers in mathematica and my calculator.
From: Nile <thrasher300 at gmail.com>
Date: Mon, 19 Mar 2012 05:00:46 -0500 (EST)
Delivered-to: l-mathgroup@mail-archive0.wolfram.com

4/(3Power[2(-2)+3, (3)^-1])

I get -(4/3) (-1)^(2/3) in Mathematica but only -4/3 on my calculator.


N[Sec[8/(8 Sqrt[2])]]/Degree to get Cos^-1 of 8/(8 Sqrt[2]) and it gives me 75 deg instead of 45...

I'm not sure what I'm doing wrong, I tried in Wolfram Alpha and it gives me the same thing.

Thank you.

-Francis

Follow-Ups:
- Re: Different answers in mathematica and my calculator.
  - From: Murray Eisenberg <murray@math.umass.edu>
- Re: Different answers in mathematica and my calculator.
  - From: DrMajorBob <btreat1@austin.rr.com>
- Re: Different answers in mathematica and my calculator.
  - From: Bob Hanlon <hanlonr357@gmail.com>

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