1.圆(x-1)²+(y-1/2)²=4的圆心(1,1/2 ),半径( 2 )2.判断下列各点与曲线的关系:(1)(0,0) (2)(3,0) (3)(0,-2)与曲线y²-x+2y=0(0,0)在曲线上 (3,0)不在曲线上 (0,-2)在曲线上3....
1.圆(x-1)²+(y-1/2)²=4的圆心(1,1/2 ),半径( 2 )2.判断下列各点与曲线的关系:(1)(0,0) (2)(3,0) (3)(0,-2)与曲线y²-x+2y=0(0,0)在曲线上 (3,0)不在曲线上 (0,-2)在曲线上3....