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If S=(1+x2)100+2x2(1+x2)99+3x4(1+x2)98+⋯+101x200, then the coefficient of x100 in S is |
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Answer» If S=(1+x2)100+2x2(1+x2)99+3x4(1+x2)98+⋯+101x200, then the coefficient of x100 in S is |
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