对“构造切线法”证明对称不等式的一点改进

对“构造切线法”证明对称不等式的一点改进

SHU XUE JIAO XUE ›› 2013, Vol. 1 ›› Issue (9) : 32-34.

SHU XUE JIAO XUE ›› 2013, Vol. 1 ›› Issue (9) : 32-34.

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