NO! 先處理()外的. reflect along y-axis -> shift to the right by 20 units
@vincy7877 Жыл бұрын
1. x+20
@raylo3029 Жыл бұрын
@@vincy7877 its two different methods
@vincy7877 Жыл бұрын
@@raylo3029 you’re right too, but errors may occur easily as we need to consider the negative sign
@frankiemak9590 Жыл бұрын
f(20-x) 係有兩個x 嘅transformation (左右嘅transformation) 所以規矩係「遠做先」 如果直接睇f(20-x) = f(-x+20),20比較遠,負比較近 所以先+20,再乘-1,即係先向左20,再reflect about the y axis 另一個睇嘅方法係 f(20-x) = f(-(x-20)) 而家遠嘅係 負,近嘅係 -20 根據「遠做先」,就先乘-1,再-20,所以先reflect about the y axis,再向右20 方法一:先向左20,再reflect about the y axis 方法二:先reflect about the y axis,再向右20 得出嘅結果會相同的 p.s. 小心如果兩個 y (上下) 嘅 transformation,就係「近做先」