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February 16th, 2010, 06:11 AM  #1 
Member Joined: May 2009 Posts: 90 Thanks: 0  Simpsons rule,Trapezoidal rule,check please
Hi, I have used... simpsons rule and got = 14397.5m2 Trapezoidal rule and got = 14556.25m2 from the attachment,can someone check my answers please. Thanks...[attachment=0:eehytgwu]01022010 124724_0064.jpg[/attachment:eehytgwu] 
February 16th, 2010, 06:22 AM  #2 
Senior Member Joined: Aug 2008 From: Blacksburg VA USA Posts: 338 Thanks: 4 Math Focus: primes of course  Re: Simpsons rule,Trapezoidal rule,check please
your Simpson's checks, so it looks good

February 16th, 2010, 06:49 AM  #3 
Member Joined: May 2009 Posts: 90 Thanks: 0  Re: Simpsons rule,Trapezoidal rule,check please
Thanks, is there usually this much of a discrepancy between simpsons and trapezoidal? Mark 
February 17th, 2010, 09:23 AM  #4 
Senior Member Joined: Aug 2008 From: Blacksburg VA USA Posts: 338 Thanks: 4 Math Focus: primes of course  Re: Simpsons rule,Trapezoidal rule,check please
yeah, depending on the interval size, can see error as merely using a straight line for a curve. See this link for discussion of the "corrected" T.R., which really helps at least in the example (see Chap 5, sect 5.2 examples) [url]http://www.cs.uiowa.edu/~atkinson/ena_master.html/url].


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