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QUESTION: enter image description here

I am doing this question using a tabular method of solving trapezoidal approx. and I came up with an answer as 1.1128153 but this answer is not on the above question answer list then I just assumed 1.56396455. please someone help me here, check my working on image file attached below.

enter image description here

Jean Marie
  • 81,803
Surdz
  • 627

1 Answers1

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The last line: the weight should be 1, not 2.

szw1710
  • 8,102
  • i notice that and by making it to 1; i get the result to be 1.065406203 which is still not in the list. – Surdz Sep 20 '17 at 09:08
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    The answer is the middle one. The $y_i$ column contain the values of a function, not the ratios of $x_i$'s. See my spreadsheet. https://www.dropbox.com/s/vxfu6db9v5yd144/trapezoid.xls?dl=0 It will be removed in few hours :) – szw1710 Sep 20 '17 at 09:12