I couldn't get LaTEX to display this one, it kept erroring out after about 3/4 of the equation was entered. So I pasted a jpg instead. Thanks for looking.

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- August 26th 2006, 07:32 PMYogi_Bear_79Help with Riemann sums for a continuous function
I couldn't get LaTEX to display this one, it kept erroring out after about 3/4 of the equation was entered. So I pasted a jpg instead. Thanks for looking.

- August 26th 2006, 07:40 PMThePerfectHacker
I think there is a mistake. That is not expressable as a Riemann sum.

- August 26th 2006, 07:50 PMYogi_Bear_79
That's not good, I double-checked it and it is as typed in the course guide!

- August 26th 2006, 08:02 PMThePerfectHacker
Sorry forgive me. I saw something else in the problem and made a mistake.

The function is,

Then, the convergent riemann sum is, (by definition)

Now,

Has property that,

Then by the Fundamental Theorem of Calculus (eventhough I am angry :mad: when it is referred to as like this. It certainly is not a fundamental theorem at all!)

- August 27th 2006, 06:40 AMJameson
Rewrite the sum like so.

Now let and . Now all of PH's work follows. - August 27th 2006, 10:33 AMYogi_Bear_79
The only example from my book that I have to go by is like the first image below. I tried to rewrite your work in the second image to anwser the question. Can you look at it and let me know if I messed up? Thanks

- August 27th 2006, 05:48 PMJameson
You must first write the sum in a general way as I did for you. You are setting up rectangles partitioned ...etc and letting n approach infinity for the rectangles height, and the width of each rectangle is . Now when you apply the limit, the infinite sum tranforms into the integral .