請詳步驟教我計下條 :
(不要綱址答)
求a , b, m, n 有沒有式可背或點詳睇.
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急! F4 Basic Trigonometry ex4_1
2012-10-23 2:34 am
回答 (1)
2012-10-23 6:07 am
✔ 最佳答案
(a) y = 4 cos ( x -120degrees ) + 7(b) y = 2 cos ( (1/2)x + 30 degrees ) -1
(c) y = cos ( 3x - 30 degrees ) + 8
the value of a, b depends on the transformation along the y axis because it is out of the function of x,
i.e. y = a f(x) + b
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121022000051KK00440