【简答题】已知函数 . (1)求函数 的最小正周期; (2)当 时,求函数 的最大值,最小值.
【简答题】已知函数 , (1)求函数 的最小正周期; (2)求函数 的单调递增区间; (3)求函数 的最值.
【简答题】已知函数 . (Ⅰ)求函数 的最小正周期; (Ⅱ) 当 时,求函数 的最大值,最小值.
【简答题】已知函数 . (1)求函数 的最小正周期; (2 )当 时,求函数 的最大值,最小值.
【简答题】已知函数 . (1)求函数 的最小正周期; (2)当 时,求函数 的最大值,最小值.
【单选题】One-room Schools One-room schools are part of the heritage of the United States, and the mention of them makes people feel a vague longing for 'the way things were.' One-room schools are an endangered...
B.
are the best in Nebraska.
C.
are a good example of the good old days.
D.
privide good education
【多选题】Do you find getting up in the morning so difficult that it's painful? This might be called laziness, but Dr. Kleitman has a new 【 C1 】 ______. He has proved that everyone has a daily energy cycle. Dur...
J.
habitually K. naturally L. explanation M. change N. commenting O. increase
【简答题】Do you find it very difficult and painful to get up in the morning? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. During ...