Question

下面函数的定义域怎么求啊，要详细过程，谢谢

函数的定义域是

Answer 1

要使函数有意义必须：
{x≠0
{1+(1/x)≠0
{1+(1/x)>0
===>
{x≠0
{x≠-1
{(x+1)/x>0
===>
{x≠0
{x≠-1
{x(x+1)>0
===>
{x≠0
{x≠-1
{x>0或x<-1
===>
x>0或x<-1