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Seek the answer of Shanghai 2009 Senior Three Mathematics Competition (New Knowledge Cup)! ! !
I went to participate, and the answer is for reference only.

1. 100 2.(3 x- 1)/2 3。 (0,2) 4. () 5.6. (0,4) Closed interval 7. 1005 8.400.

9. 1/ root number 2 10. ( 10/3,0) 1 1.570 12

If there is any difference, please come and discuss with me. I also want to know my general situation.

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