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  • 組合數(shù)求解:C(0,2014)+C(2,2014)+C(4,2014).+C(2014,2014)=?

    組合數(shù)求解:C(0,2014)+C(2,2014)+C(4,2014).+C(2014,2014)=?
    數(shù)學人氣:751 ℃時間:2020-05-28 00:50:51
    優(yōu)質(zhì)解答
    C(0,2014)+C(2,2014)+C(4,2014).+C(2014,2014)
    =(1+1)^2014
    =2^2014那2^0*C(0,2014)+2^2*C(2,2014)+2^4*C(4,2014)......+2^2014*C(2014,2014)=?2^0*C(0,2014)+2^【1】*C(2,2014)+2^【2】*C(4,2014)......+2^2014*C(2014,2014)=(2+1)^2014=3^2014可是我學的是2^0*C(0,2014)+2^1*C(1,2014)+2^2*C(2,2014)+2^3*C(3,2014)......+2^2014*C(2014,2014)=(2+1)^2014=3^2014而題只給偶數(shù)了,這該怎么辦?謝謝.2^0*C(0,2014)+2^2*C(2,2014)+2^4*C(4,2014)......+2^2014*C(2014,2014)=2^0*C(0,2014)+2^2*C(2,2014)+2^4*C(4,2014)......+2^2014*C(2014,2014)+2^1*C(1,2014)+2^3*C(3,2014)+。。。+2^2013*C(2013,2014)-2^1*C(1,2014)+2^3*C(3,2014)+。。。+2^2013*C(2013,2014)=(2+1)^2014-2^1*C(1,2014)-2^3*C(3,2014)+。。。-2^2013*C(2013,2014)(2-1)^2014=2^0*C(0,2014)+2^2*C(2,2014)+2^4*C(4,014)......+2^2014*C(2014,2014)-2^1*C(1,2014)-2^3*C(3,2014)+。。。-2^2013*C(2013,2014)=1則 2^0*C(0,2014)+2^2*C(2,2014)+2^4*C(4,2014)......+2^2014*C(2014,2014)=1+2^1*C(1,2014)+2^3*C(3,2014)+。。。+2^2013*C(2013,2014)A=1+BA-B=1A+B=(2+1)^2014A=(3^2014+1)/2
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