=a0+a1(X-1)+a2(X-1)^2+...+an(X-1)^n 求a2!答案是(2x-3)^9=[2(X-1)-1]^9 所以 a2=C97乘2^2乘 (-1)^7=-144 我看不懂啊.求文字说明不好意思,等式左边是(2x-3)的九次方
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![=a0+a1(X-1)+a2(X-1)^2+...+an(X-1)^n 求a2!答案是(2x-3)^9=[2(X-1)-1]^9 所以 a2=C97乘2^2乘 (-1)^7=-144 我看不懂啊.求文字说明不好意思,等式左边是(2x-3)的九次方](/uploads/image/z/12083591-47-1.jpg?t=%3Da0%2Ba1%28X-1%29%2Ba2%28X-1%29%5E2%2B...%2Ban%28X-1%29%5En+%E6%B1%82a2%21%E7%AD%94%E6%A1%88%E6%98%AF%282x-3%29%5E9%3D%5B2%28X-1%29-1%5D%5E9+%E6%89%80%E4%BB%A5+a2%3DC97%E4%B9%982%5E2%E4%B9%98+%28-1%EF%BC%89%5E7%3D-144+%E6%88%91%E7%9C%8B%E4%B8%8D%E6%87%82%E5%95%8A.%E6%B1%82%E6%96%87%E5%AD%97%E8%AF%B4%E6%98%8E%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%EF%BC%8C%E7%AD%89%E5%BC%8F%E5%B7%A6%E8%BE%B9%E6%98%AF%EF%BC%882x%EF%BC%8D3%EF%BC%89%E7%9A%84%E4%B9%9D%E6%AC%A1%E6%96%B9)
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