求下列函数的存在域[br][/br][tex=9.643x1.357]2MpWcqsQ/QgEFVeUg1QH7caiFBcONyABElI/WR3zrUZWJkAO4iJZ0/Xt5/JmsLgS[/tex]
求下列函数的存在域[br][/br][tex=9.643x1.357]2MpWcqsQ/QgEFVeUg1QH7caiFBcONyABElI/WR3zrUZWJkAO4iJZ0/Xt5/JmsLgS[/tex]
1