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Find the centroid of the region bounded by the graphs of the functions ` y=3 sin(x) `, ` y=1/9 x `, and ` x=pi/2 `, and touching the origin.

The centroid is at `(bar x, bar y)` where:

`bar x =`  

`bar y =`  

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   x  x  √  n√  |   | (   ) π ∞ DNE
   x  √  (   ) π ∞ DNE
( ) ( ] [ ) [ ] —∞ ∞ ∪ DNE
< > ≤ ≥ or All Real Numbers DNE
log logn ln n√  | | e 
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