equals
left parenthesis, negative 4 , negative 1 , right parenthesis
left parenthesis, negative 1 , 1 , right parenthesis
1
equals
left parenthesis, negative 1 , 1 , right parenthesis
left parenthesis, 2 , 3 , right parenthesis
2
3
技术支持
技术支持
新建空白图表
示例