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earthquake
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damage
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ch of
er
ed s
1≤x23 or
2X-1≤3
2854
-3<*<-
1-x3
-242x
32
第1章數與式
(1)
8.解下列不等式.
(1)1≤ [x] <3.
(2)/2x-11≤3.
(2)
x≤2
1077
(2 = xit
9. 小菡某日執行一計算,因精神不濟,將一正數“乘以0.5,”誤計算為“乘以0.5,”導致
所得結果相差1,則此正數應為多少?
18.
C.5X+1
亨 水餃
阿拿
手工
1. 阿亨手工水餃包裝上標示,每顆重量是32公克±5%,假設
每顆水餃的實際重量為x公克,試求x滿足的絕對值不等式
-al≤b.
六:P公克±a%意指P公克±PXa%公克)
9.1
32x
= 1.6
每顆重量
32公克±5%
321.6≤x≤32+1.6
21.6≤x-32≤1.6
|x-321≤1.6
利