Mathematics
Senior High
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せ。
(2) ab>0 のとき,
[ 11 津田塾大 ]
4 を証明せよ。 [14 広島文教女子大]
( a + b )(b + 1) = ₁
m Ck
Cm-1
1 はすべて m
(2) ( a + ²1² ) ( b + ¹² ) = ab + 1²/16 +2
a
ab
1
≥2₁√ ab./+2=4]
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