(1+2/1)×(1-2/1)×(1+3/1)×(1-3/1)×……×(1-99/1)×(1+100/1)×﹙1+100/1﹚

问题描述:

(1+2/1)×(1-2/1)×(1+3/1)×(1-3/1)×……×(1-99/1)×(1+100/1)×﹙1+100/1﹚

(1+2分之1)*(1-2f分之1)*(1+3分之1)*(1-3分之1)……(1+100分之1)*(1-100分之1)=(1-1/2)(1+1/2)(1-1/3)(1+1/3)……(1-1/100)(1+1/100)=(1/2)(3/2)(2/3)(4/3)(3/4)(5/4)……(99/100)(101/100)=(1/2)(101/100...