(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)=?请写出过程和道理!

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(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)=?请写出过程和道理!(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/

(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)=?请写出过程和道理!
(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)=?请写出过程和道理!

(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)=?请写出过程和道理!
(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)
=(1+1/2)(1-1/3)(1+1/4)(1-1/5)*……*(1-1/9)(1+1/10)
=3/2*2*3*5/4*4/5*……*9/8*8/9*11/10
=11/10

自己看下
1+1/2=3/2
1-1/3=2/3
他们乘起来是1
其它同理的
所以结果是1

你好:
(1+1/2)*(1+1/4)*......(1+1/10)*(1-1/3)*(1-1/5)*......(1-1/9)
=(1+1/2)(1-1/3)x(1+1/4)(1-1/5)x(1+1/6)(1-1/7)x(1+1/8)(1-1/9)x(1+1/10)
=(3/2x2/3)x(5/4x4/5)x(7/6x6/7)x(9/8x8/9)x11/10
=11/10
还算清楚吧?