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Find the lower sum for the region bounded by f(x)=9-x^2 and the axis between x=0 and x=3.

9-27/(2n) + 27/(6n^2)
9+27/(2n) + 27/(6n^2)
18+27/(2n)-27/2
18-27/(2n)-27/(6n^2)
none of the above

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The lower sum of a bounded region is found.

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