题目

设0≤x≤2,求函数y=-3·2x+5的最大值、最小值. 答案：最大值 、最小值 【解析】试题分析: 令, 则1≤t≤4  ，所以函数，其对称轴为，所以当时，函数取得最小值，此时；当时，函数取得最大值，此，故函数的最大值和最小值分别为和。 将问句与相应的答语连线。 1.What would you like to drink?      2. Who is thirsty?                  3. Where is your pop?               4. Would you like some juice?        5. Do you like bananas?             A. Yes, I would like some juice.B. No, I don't.C. I would like some tea.D. I am.E. It's in my stomach.