A+B=1
B-A=-3
A=2
B=-1步骤详细点先通分,在根据对应项系数相等列方程。
x-3/(x+1)(x-1)=A/x+1+B/x-1成立.求A,B的值
x-3/(x+1)(x-1)=A/x+1+B/x-1成立.求A,B的值
数学人气:113 ℃时间:2020-09-11 05:37:01
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