2018年秋九年级数学上册第二十二章二次函数第4课时二次函数y=a(x_h)2的图象和性质(课后作业)习题课件(新版)新人教版.ppt

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2018年秋九年级数学上册第二十二章二次函数第4课时二次函数y=a(x_h)2的图象和性质(课后作业)习题课件(新版)新人教版.ppt_第1页
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2018年秋九年级数学上册第二十二章二次函数第4课时二次函数y=a(x_h)2的图象和性质(课后作业)习题课件(新版)新人教版.ppt_第3页
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2018年秋九年级数学上册第二十二章二次函数第4课时二次函数y=a(x_h)2的图象和性质(课后作业)习题课件(新版)新人教版.ppt_第4页
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1、作业本,第4课时 二次函数y=a(xh)2的图象和性质,第二十二章 二次函数,1.抛物线y=2(x-2018) 的顶点坐标是( ) A. ( -2018,0) (2018,0 ) (0,-2018) D. (0,2018),作 业 本,B,2对于任何实数h,抛物线y=(xh)2与抛物线y=x2( ) A开口方向相同 B对称轴相同 C顶点相同 D都有最高点,作 业 本,A,3.某抛物线和y=2x的图象形状相同,开口方向相同,对称轴平行于y轴,且顶点坐标是(1,0),则此抛物线的解析式为 .,作 业 本,4. 抛物线了y= (x-3) 的开口向_,与y轴的交点坐标是_,作 业 本,上,5.已知抛物

2、线y=ax2向左平移1个单位后所得到的抛物线经过A(1,-4),平移后抛物线的解析式是 .,作 业 本,y= -(x+1)2,6.若抛物线ym (x1)2过点(1,4),求m.,作 业 本,-1,7.抛物线ym (xn)2向左平移2个单位后,得到的函数关系式是y4 (x4)2,求 m和n.,作 业 本,m-4,n-6,8.已知函数y=(x-2) (1)画出它的图象; (2)写出函数图象的开口方向、对称轴、顶点坐标 (3)写出增减性与最值。,作 业 本,(1)略,作 业 本,(2)开口向上,对称轴为直线x=2,顶点坐标为(2,0) (3)当x 2时,y随x的增大而增大;当x 2时,y随x的增大而减小;有最小值,是0,谢谢!,

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