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Friday, March 5, 2010
Well...
睇黎我要背鬼左呢兩條 inequality 佢=.=,起碼要由右手邊 sense 到左手邊舊野。
a
3
+
b
3
+
c
3
+
3
a
b
c
≥
a
2
b
+
a
2
c
+
b
2
a
+
b
2
c
+
c
2
a
+
c
2
b
.
a
4
+
b
4
+
c
4
+
a
b
c
(
a
+
b
+
c
)
≥
a
3
b
+
a
3
c
+
b
3
a
+
b
3
c
+
c
3
a
+
c
3
b
.
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