2011????????????????????????п??????
?? ?
????????????????????????????????????.????1??3???????4??9?.???????100?????????100??.
??????????24???
1.??????????????????????????????????????????????????.
2.?С????????????????????????????????????????????????????.
3.???????????????????????????.
????????????8С???С??3?????24??????С??????????????У???????????????????.
1. ????????
??2?????
A. B.-2 C. D.2
2.??????κ???y=ax2+bx+c??a??0???????
??????????y??0???x??????Χ??
A.-1??x??3 B.x??3
C.x??-1 D.x??3??x??-1
3.???????100??????????????x%??????120??????????з??????????
A.100??1-x%??2=120 B.100??1+x%??2=120
(4???)
C.100(1+2x%)=120 D.100(1+x2%)=120
4.???????????????????????????
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