October 2nd, 2011, 05:16 PM  #1 
Senior Member Joined: Sep 2011 From: New York, NY Posts: 333 Thanks: 0  Trapezoidal Rule
I keep getting the wrong answer for this question. Estimate the integral, using the Trapezoidal Rule with n = 4. (Round your answer to six decimal places.) " /> 1.874920352 
October 2nd, 2011, 05:28 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: Trapexoidal Rule
I get: 
October 2nd, 2011, 05:32 PM  #3 
Senior Member Joined: Sep 2011 From: New York, NY Posts: 333 Thanks: 0  Re: Trapexoidal Rule
yep, you were right.

October 2nd, 2011, 05:36 PM  #4 
Senior Member Joined: Sep 2011 From: New York, NY Posts: 333 Thanks: 0  Re: Trapexoidal Rule
I forgot the 2.

October 2nd, 2011, 05:37 PM  #5 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: Trapexoidal Rule
You weren't multiplying all but the first and last iterations by 2, and it appears you may have been multiplying some iterations instead of adding.


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