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若多项式(1+x)m=a0+a1x+a2x2+…+amxm满足:a1+2a2+3a3+…+ mam=80,则http://picflow.koolearn.com/upload/papers/g02/20111105/20111105094608468911.gifhttp://picflow.koolearn.com/upload/papers/g02/20111105/201111050946084841177.gif)的值是

发布时间:2021-07-12

A.http://picflow.koolearn.com/upload/papers/g02/20111105/20111105094608484865.gif

B.http://picflow.koolearn.com/upload/papers/g02/20111105/20111105094608500871.gif

C.http://picflow.koolearn.com/upload/papers/g02/20111105/20111105094608531863.gif

D.http://picflow.koolearn.com/upload/papers/g02/20111105/20111105094608562863.gif

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