若点P(m-3,m+1)在第二象限,则m的取值范围是______.
∵点P(m-3,m+1)在第二象限,
∴m-3<0,m+1>0,
解得:-1<m<3.故填:-1<m<3.
(1)图一和图二分别反映了什么经济现象?
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(2)两图表明商品生产和交换受什么规律支配?简述这一规律的基本内容和表现形式?
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(3)简述面对市场变化,价格变动,生产经营者又该如何面对?
"武舞"是武术()的雏形