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求零點的方法有三個1.畫出函數影像2.分析零點區間3.分解影像此題適用於方法二,取0.1時函數值為15.9.當X取1時f(x)=-3,取10時f(x)=7.8,取100時職位198.96,取由f(x1)*f(x2)小於0可知在區間(x1,x2)有零點.所以該函…
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