Mathematics
Senior High
๐จ๐จใใฎๅ้กใฎ่งฃใๆนใๆใใฆใใ ใใ๐โโ๏ธ
็ญใใฏใa<0, 0<a<1/4ใงใใ
4
(5) ้ขๆฐ f(x)=x4+
+2ax2 +1 ใๆฅตๅคงๅคใจๆฅตๅฐๅคใใ
ใคใใใชๅฎๆฐ ฮฑใฎๅคใฎ็ฏๅฒใฏ
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