问题标题:
【分式判断1题计算(1+(1/x-1))除以(1+(1/(x^2-1))的结果为()答案是C,请解析!A.1B.X+1C.(X+1)/XD.1/(X-1)】
问题描述:
分式判断1题
计算(1+(1/x-1))除以(1+(1/(x^2-1))的结果为()答案是C,请解析!
A.1B.X+1C.(X+1)/XD.1/(X-1)
陈红军回答:
(1+(1/x-1))/(1+(1/(x^2-1))
=(x^2-1+x+1)/(x^2-1+1)
=x(x+1)/x^2
=(x+1)/x
C.(X+1)/X
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