壩תծ?BR>1.Dȯp112
2.DȯĻҪP113-114
DȯĻҪذƱƱʡD۸DʡDޡDl?
⣺ij˾пתծȯÿֵ?000ԪÿDȯD۸40ԪÿȯܹDƱĹ
A.40
B.15
C.30
D.25
SD
ÿȯܹDƱĹDʣD۸=ȯֵ/DʣD=ȯֵ/D۸=1000/40=25
3.Dȯȱ
Z?BR>1ɽsϢ֧
2ȶƱмP
3ԡ
ȱ?BR>1TԹ
2՟۷գ
3ԏɼ۴գ
1.ʽص
1ۺأI(y)f(xi)飬ʲˣٽg?BR>2ֱޣֱҪʲ
3ܸޣ漰ˡ˺?BR>2.^
1豸ۿ䓧?BR>2Ϣʳ
3.ļ
ԭʽrֵԭ
(zhn)P118 3-10
(zhn)P1183-11
4.ȱ
Z?BR>1Rȿ
2
3豸̭?BR>4С
5
Ҫȱ㣺ʳ߅?BR>ġI(y)
1.u}ڍIɵҵ^ʒ֮һֱù?
3.I(y)õľ
⣺ijM?00Ԫ"2/10n/30"
2/10ʾ10֮ԍ?%ۿP10--ۿ
n/30ʾ10e?0֮ԍȫ 30--
x
һۿԍ?%ۿPףռ20ʽ
Ԝۿԑڡôãռ20ʽwףʧۿۡ
ڣǷչãôռʽwףʧ֙
ϱ
x10~98Ԫx30~98+2Ԫ2ԪǶռ20ʽϢ
1 㹫?
2ԭ
⣺ijf܃rn?00Ԫ̹涨?0֮ԍ?820֮ԍ?930֮ԍ?00
1жԟ15%ۿ۵ij()_Ըù˾ĸՊD۸
2ĿǰһͶͶ40%_Ըù˾ĸՊD۸
S
1
10g۵ijɹP?
20g۵ijɹP?
ĸ10~۸98Ԫ
2ۿ۵ijС40%ԍI(y)30~۸100Ԫ
4.I(y)Qȱ
Z?BR>r
ʳ
ȱuõ҅ṚܶۿPߡ
塢܄?BR>1.壺ָGҵՒ씳YʲrTչI(y)ʲͽѺCQʽչΪһֳʻ
2.ص?BR>1ܸ˱ʽ]
2ٽI(y)̭
3İȫԺã
4Իʲֵ
5Ͷߵ