求以下函數的最大值及最小值 : ( 0 ≦ x < 2π )
1.
y = sin x - cos x
2.
y = sin x + √3 cos x
3.
y = sin x sin [(π / 3 ) - x]
2007-02-21 09:13:25 · 2 個解答 · 發問者 J 7 in 科學 ➔ 數學
請看以下做法:
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2007-02-21 09:32:20 · answer #1 · answered by 魏王將張遼 7 · 0⤊ 0⤋
Q1. max = sqrt(2) ~ 1.414; min = -sqrt(2) ~ -1.414
Q2. max = 1; min = -1
Q3. max = 0.5; min = -0.5
2007-02-21 09:51:39 · answer #2 · answered by ? 3 · 0⤊ 0⤋