问题 解答题

类比二次函数的图象的平移,我们对反比例函数的图象作类似的变换:

(1)将的图象向右平移1个单位,所得图象的函数表达式为______,再向上平移1个单位,所得图象的函数表达式为_______;

(2)函数的图象可由的图象向______平移______个单位得到;的图象可由哪个反比例函数的图象经过怎样的变换得到?

(3)一般地,函数的图象可由哪个反比例函数的图象经过怎样的变换得到?

答案

解:(1)

(2)上,1,可转化为

它的图象可由反比例函数的图象先向右平移2个单位,再向上平移1个单位得到。

(3)函数)可转化为

时,的图象可由反比例函数的图象向左平移a个单位,再向上平移1个单位得到

时,的图象可由反比例函数的图象向右平移-a个单位,再向上平移1个单位得到。

改错题

短文改错(共10小题;每小题1分,满分10分)

以下标有题号的每一行均有一个错误,请找出,并按下列情况改正:

此行多一个词:把多余的词用斜线(╲)划掉,在该行右边横线上写出该词,并也用斜线划掉。

此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。

此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。

注意:请在答题卡上作答。

I was glad to accept your letter of June 22.                                     76.      ____ 

I don’t expect that you would answer my letter so                                             77.           

soon.You suggested in letter that I read more, to                                            78.           

which I agree.That is true that one should read                                      79.           

much to improve his reading.It is the same like                                       80.           

swimming.One can’t learn to swim if he goes and                                           81.           

swim in the water.So this summer vacation I am                                             82.           

going to get down to read some books.Although                                             83.           

I am not the kind of person always does things                                                    84.           

according to his plan, but I will try my best.                                                       85.           

问答题 简答题