将函数y=2
x+1的图象按向量
平移得到函数y=2
x+1的图象,则
等于( )
A. (-1,-1)
B. (1,-1)
C. (1,1)
D. (-1,1)
人气:180 ℃ 时间:2019-09-03 00:08:50
解答
设
=(h,k)则
函数y=2
x+1的图象平移向量
后所得图象的解析式为y=2
x-h+1+k
∴
∴
∴
=(-1,-1)
故选A
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