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1.1/(x-1)+1/(x+1)2.1/(a-1)=1/(a^2-1)3.(2-x)/(3+x)=1/2+1/(x+3)
题目详情
1.1/(x-1)+1/(x+1)
2.1/(a-1)=1/(a^2-1)
3.(2-x)/(3+x)=1/2+1/(x+3)
2.1/(a-1)=1/(a^2-1)
3.(2-x)/(3+x)=1/2+1/(x+3)
▼优质解答
答案和解析
1.1/(x-1)+1/(x+1) =2x/(x^2-1)
2.1/(a-1)=1/(a^2-1)
a=1
3.(2-x)/(3+x)=1/2+1/(x+3)
x=-3.x=-1/3
2.1/(a-1)=1/(a^2-1)
a=1
3.(2-x)/(3+x)=1/2+1/(x+3)
x=-3.x=-1/3
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