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math>philosophy
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plzzzz just type the question when you post

Dido525
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dw:1353736632757:dw

Dido525
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Well it's better when I draw it out.

Dido525
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The answer is 8 but I have no idea why. @math>philosophy @satellite73

anonymous
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the answer is 8? i don't think that is right

math>philosophy
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It shouldn't be 8. Are you still doing Riemann sums?

Dido525
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Well according to maple it's 8.

math>philosophy
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Then there must be a syntax error

Dido525
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I checked on wolfram too.

anonymous
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oh i am a dope

Dido525
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Let me double check.

anonymous
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the index is \(i\) but the expression is \(\frac{8}{n}\)

Dido525
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Yeah.

math>philosophy
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oh

anonymous
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so it is a constant

Dido525
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Well I know that but then we have:
dw:1353736967140:dw

anonymous
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\[\sum_{i=1}^n\frac{8}{n}=\frac{8}{n}+\frac{8}{n}+...+\frac{8}{n}\] where there are \(n\) terms and that gives you 8 for all \(n\)

Dido525
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How? If I said n =1 and then n=2 they aren't the same.

perl
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sigma of 1 is n , so

Dido525
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Ohh right!!!! I feel like an idiot....

anonymous
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are you summing over \(i\) or over \(n\) ?

Dido525
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Got it! Thanks everyone :) .

anonymous
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ok