它们三元
They are three yuan.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
它们多少钱？它们三元钱。
How much are they? — they're three yuan.
youdao
它们三元。
They're three Yuan.
通过对两类特殊三元函数极值问题的探讨，得到了由其系数来判别它们能否取得极值的充分条件。
Via the discussion about the extremum question of two kinds of special ternary function, Obtain the sufficient condition of judging if they can get the extremum by their coefficients.
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