【評論主題】8.若0 ≤ θ ≤ 2π，試求f(x) = 3sinθ + 5之最小值為何?(A)8 (B)6 (C)4 (D)2

【評論內容】Sinθ在0~2π這範圍最小值為-1所以........

【評論主題】8.若0 ≤ θ ≤ 2π，試求f(x) = 3sinθ + 5之最小值為何?(A)8 (B)6 (C)4 (D)2

【評論內容】Sinθ在0~2π這範圍最小值為-1所以........