17/07/13 10:54:34.52 aYclV8OY.net
B.3989
URLﾘﾝｸ(www.komal.hu)
a, b, c are positive numbers, such that a^2 + b^2 + c^2 + abc = 4. Prove that a+b+c<3.
A.422、B3987 にも不等式があるね。
17/07/13 10:54:34.52 aYclV8OY.net
B.3989
URLﾘﾝｸ(www.komal.hu)
a, b, c are positive numbers, such that a^2 + b^2 + c^2 + abc = 4. Prove that a+b+c<3.
A.422、B3987 にも不等式があるね。