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MathGroup Archive 2005

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Re: Integrate is driving me crazy, please help!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56191] Re: [mg56184] Integrate is driving me crazy, please help!
  • From: "David Annetts" <davidannetts at aapt.net.au>
  • Date: Tue, 19 Apr 2005 04:54:47 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Jim, 

<snippage>

> In Mathematica, Log is Log to base e, right (LN in excel)? 
> Did I use variables that have intrinsic functions in 
> Mathematica? Maybe I am misunderstanding the output with 
> regard to implicit parentheses etc. 
> Any help appreciated!

Your syntax is wrong ....

Start with your kernel & give your variables numerical values:-

(hillb*((f0 + hilla)/(2*Pi*f*a*Cos[ArcSin[x/a]] + hillb))) - hilla /.
{hilla->3, hillb->50, f0->8, a->1, f->1}

Note differences between your pi & the way that functions are defined --
square brackets vs. round ones.

This kernel can be integrated using:-
	Integrate[%, {x, -1, 1}]

which has a numerical value of:-

	N[%]

Regards,

Dave.


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