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呵呵,偶函數是關於y軸對稱的,有f(x)=f(-x),把x和-x帶入函數,就能算出k值 我沒太看清楚你的函數是什麼(最後的那個8是什麼意思?). 一般的規律是: 偶函數中,x的奇數次(如x的一次項、三次項)的係數為0; 奇函數中,x的偶數次(如x的二次項、四次項)的係數為0.
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