看你怎么把x 变换到2x-2.
1) replace x with 2x: x -- > 2x.
replace x with x-1, get 2(x-1).
这是答案给的方法。
2) 另一种办法:
replace x with x-2: get x-2.
In the above replace x with 2x: get 2x-2.
所以可以先平移后scaling, 但是平移的距离是2.
看你怎么把x 变换到2x-2.
1) replace x with 2x: x -- > 2x.
replace x with x-1, get 2(x-1).
这是答案给的方法。
2) 另一种办法:
replace x with x-2: get x-2.
In the above replace x with 2x: get 2x-2.
所以可以先平移后scaling, 但是平移的距离是2.
•
所以你的方法1其实就是先scale x 到2x,然后再平移1个unit,看来还是我的理解错了,谢谢.
-Pilsung-
♂
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06/14/2025 postreply
11:15:36
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