Question

若且，求x，y的值．

 

Answer 1

【答案】

 

【解析】解：∵ x，y≠ 0，∴ xy≠ 0，

∴lg(xy)=0，∴xy=1，······································································ 3分

即为{x，1，0}={0，|x|，y}，若y=1，则x=1，不合题意，·························· 5分

∴····················································································· 7分

解得：（舍去），，······················································· 8分

∴x=-1，y=-1．············································································· 9分