解方程 1/(x-1)+1/(x+1)=a
解关于x方程
1/(x-1)+1/(x+1)=a
参考答案:1/(x-1)+1/(x+1)=a
两边乘(x-1)(x+1)
x+1+x-1=a(x+1)(x-1)
2x=a(x^2-1)
ax^2-2x-a=0
1)a=0,x=0
2)a≠0,
x1=[2+√(4+4a^2)]/2a
x1=[2-√(4+4a^2)]/2a
解关于x方程
1/(x-1)+1/(x+1)=a
参考答案:1/(x-1)+1/(x+1)=a
两边乘(x-1)(x+1)
x+1+x-1=a(x+1)(x-1)
2x=a(x^2-1)
ax^2-2x-a=0
1)a=0,x=0
2)a≠0,
x1=[2+√(4+4a^2)]/2a
x1=[2-√(4+4a^2)]/2a