化简1/1+x+2/1+x^2+4/1+x^4+…+n/1+x^n-2n/1-x^2n 1、化简1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)要计算过程.2、如果-5
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![化简1/1+x+2/1+x^2+4/1+x^4+…+n/1+x^n-2n/1-x^2n 1、化简1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)要计算过程.2、如果-5](/uploads/image/z/758230-70-0.jpg?t=%E5%8C%96%E7%AE%801%2F1%2Bx%2B2%2F1%2Bx%5E2%2B4%2F1%2Bx%5E4%2B%E2%80%A6%2Bn%2F1%2Bx%5En-2n%2F1-x%5E2n+1%E3%80%81%E5%8C%96%E7%AE%801%2F%281%2Bx%29%2B2%2F%281%2Bx%5E2%29%2B4%2F%281%2Bx%5E4%29%2B%E2%80%A6%2Bn%2F%EF%BC%881%2Bx%5En%EF%BC%89-2n%2F%EF%BC%881-x%5E2n%EF%BC%89%E8%A6%81%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B.2%E3%80%81%E5%A6%82%E6%9E%9C-5)
化简1/1+x+2/1+x^2+4/1+x^4+…+n/1+x^n-2n/1-x^2n 1、化简1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)要计算过程.2、如果-5
化简1/1+x+2/1+x^2+4/1+x^4+…+n/1+x^n-2n/1-x^2n
1、化简1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)要计算过程.
2、如果-5
化简1/1+x+2/1+x^2+4/1+x^4+…+n/1+x^n-2n/1-x^2n 1、化简1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)要计算过程.2、如果-5
1.1/(1-x)+1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x)
合并前两项=(1+x+1-x)/(1-x^2)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x) 这样以此类推,
则=2n/(1+x^2n)-2n/(1-x^2n)-1/(1-x) =1/(x-1)
2.这道没看懂额
1.1/(1-x)+1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x)
合并前两项=(1+x+1-x)/(1-x^2)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x) 这样以此类推,
则=2n/(1+x^2n)-2n/(1-x^2n)-1/(1-x) =1/(x-1)
2.这道没看懂额
1.1/(1-x)+1/(1+x)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x)
合并前两项=(1+x+1-x)/(1-x^2)+2/(1+x^2)+4/(1+x^4)+…+n/(1+x^n)-2n/(1-x^2n)-1/(1-x) 这样以此类推,
则=2n/(1+x^2n)-2n/(1-x^2n)-1/(1-x) =1/(x-1)