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anonymous

  • 5 years ago

approximate using the trapezoidal rule by dividing the interval 1<x<5 into four sub intervals. ∫6/x from 5 to 1

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  1. watchmath
    • 5 years ago
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    Hi, if you divide the interval into 4 subintervals each sub interval is of length one. Now the value of the function at 1,2,3,4,5 are 6,3,2,3/2,6/5. For example for the trapezoid on top of the first interval, the area is (6+3)/2 * 1 = 9/2. Do the same thing for the other sub intervals and add them all at the end to approximate the integral.

  2. anonymous
    • 5 years ago
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    i did that but got the wrong answer

  3. anonymous
    • 5 years ago
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    actually i see the mistake thanks i was multiplying by two instead of a half lol silly mistake thanks for pointing it out:)

  4. watchmath
    • 5 years ago
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    glad it works for you :). Should you need any help when I am not around you can ask me here: http://www.ask.watchmath.com

  5. anonymous
    • 5 years ago
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    thanks heaps ur champ :)

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