问题
填空题
函数y=-2x2+3的图象向下平移1个单位,再向左平移2个单位后,得到的函数是______.
答案
原抛物线的顶点为(0,0),向下平移1个单位,再向左平移2个单位,那么新抛物线的顶点为(-2,-1),
可设新抛物线的解析式为:y=-2(x-h)2+k,代入得:y=-2(x+2)2-1.
故得到的函数是y=-2(x+2)2-1.
函数y=-2x2+3的图象向下平移1个单位,再向左平移2个单位后,得到的函数是______.
原抛物线的顶点为(0,0),向下平移1个单位,再向左平移2个单位,那么新抛物线的顶点为(-2,-1),
可设新抛物线的解析式为:y=-2(x-h)2+k,代入得:y=-2(x+2)2-1.
故得到的函数是y=-2(x+2)2-1.
完形填空。 | ||||
This is my bedroom. I can see 1 pictures on the wall. The light is 2 the desk. The football is 3 the chair. 4 is the bed? It's near the table. My father and 5 bedroom is near my bedroom. 6 flowers and a bed 7 in their room. Some windows are 8 the wall. A yellow door is in the wall, 9 . I like my bedroom and my parents like 10 . | ||||
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