โจ Best Answer โจ
ใใใงใฉใใงใใใใ๏ผๅใใใชใใจใใใใใใฐ่จใฃใฆใใ ใใใญ
Mathematics
Senior High
Resolved
2ๆ็ฎใฎ๐ดใฎใใใซใ<๏ผ4ใๅ
ฅใ็็ฑใใใใใพใใ๐ญ
ใฉใชใใๆใใฆใใ ใใใจๅนธใใงใ๐โโ๏ธ
15
Aๅบใง่ฒทใใใBๅบใง่ฒทใฃใ
14 ไธ็ญๅผ 3(x-1) <2(x+ฮฑ) ใๆบใใๆๅคงใฎๆดๆฐx ใ x=3 ใงใใใจ
ใ ๅฎๆฐฮฑใฎๅคใฎ็ฏๅฒใๆฑใใใ
โ
15
ๆน็จๅผ|x|+|x-2 = 4 ใ่งฃใใ
[713้ซ็ญๅญฆๆ ก ๆฐๅญฆโ
็ซ ๆซๅ้ก14]
3(x-1) <2(x+ฮฑ) ใใ
x<2a+3
......
โ ใๆบใใๆๅคงใฎๆดๆฐx ใx=3ใงใใใใ
3 <2a +3โฆ4
ใใฃใฆ
0<2a โค1
ใใใใฃใฆokas
3
2a+3 4
IC
โ
โ ใๆบใใๆๅคงใฎๆดๆฐ
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