Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2005
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2005

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Integrate is driving me crazy, please help!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56213] Re: Integrate is driving me crazy, please help!
  • From: nafod40 <noneya at business.com>
  • Date: Tue, 19 Apr 2005 04:55:26 -0400 (EDT)
  • Organization: Penn State University, Center for Academic Computing
  • References: <d3vn1h$jm9$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Jim Martin wrote:
> Hello Mathematica Experts:
> 
> I am a biomechanist and work mostly in the area of muscle contraction. I 
> do a lot of numerical computations using excel, but right now I need an 
> analytical solution that represents force as a function of position 
> integrated over a shortening amplitude. I downloaded a trial version of 
> Mathematica and have tried to obtain a solution for this:
> 
> Integrate[(hillb*((f0 + hilla)/(2*pi*f*a*Cos(ArcSin(x/a)) + hillb))) - 
> hilla, {x, -a, a}]

You need to write the cosine of x as Cos[x], not Cos(x).

Also write the constant pi as "Pi" with caps on first letter.

That ought to do it.


  • Prev by Date: Re: Integrate is driving me crazy, please help!
  • Next by Date: Re: assigning functions
  • Previous by thread: Re: Integrate is driving me crazy, please help!
  • Next by thread: Re: Integrate is driving me crazy, please help!