MATHS 圖問x2

👨🏻‍🏫 學術台數學

用戶114652

2009-04-11 5:43 am

MATHS 圖問x2

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http://i293.photobucket.com/albums/mm67/zaza520/0002-82.jpg

更新1:

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回答 (2)

用戶10012

2009-04-11 9:30 pm

For 0002-82.
(a) sin x = 0,
a sin x = a x 0 = 0
so the line to be drawn is y = 0, answer is 0, 180.
(b) 1 + a sin x = 0
a sin x = -1
so the line to be drawn is y = -1, answer is 20 and 160 (rej. because x < 90)
(c) 2 a sin x + 5 = 0
a sin x = -5/2 .
so the line to be drawn is y = -5/2, answer is 56 and 124.

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STEVIE-G™

2009-04-11 6:21 am

你第一張圖係GAME相黎架BOR...

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