已知函数fx=Asinwx+φA>0,ω>0,-π<φ<π的部分图象如图所示，则函数fx的解析式为（）_刷题宝

题干

已知函数fx=Asinwx+φA>0,ω>0,-π<φ<π的部分图象如图所示，则函数fx的解析式为（）

A： $f (x) = 2 \sin (\frac{1}{2} x + \frac{π}{4})$

B： $f (x) = 2 \sin (\frac{1}{2} x + \frac{3 π}{4})$

C： $f (x) = 2 \sin (\frac{1}{2} x - \frac{π}{4})$

D： $f (x) = 2 \sin (\frac{1}{2} x - \frac{3 π}{4})$

上一题下一题 0.0难度选择题更新时间:2018-02-12 08:01:21

答案(点此获取答案解析）

B

同类题1

读一读，写一写。

24005600 读作：____

4578000000 读作：____

1443800 读作：____

同类题2

白马匹数的

\frac{5}{7}

等于黄马匹数，已知白马和黄马共96匹，问白马比黄马多（）

同类题3

基因中碱基G和T共有150个，那么，经转录和翻译形成的多肽链最多可以有多少个肽键（　）

同类题4

某商店原来平均每天可销售某种水果100千克，每千克可盈利7元，为减少库存，经市场调查，如果这种水果每千克降价1元，则每天可所多售出20千克．

同类题5

Mary likes to invent things. She creates a new language and teaches it to her friend, Jean. Mary and Jean like to talk to each other in their own language because they think no one understands them and it is funny. When they go shopping, they say things like: "Look! He is fat.” “This CD is awful." "I want to eat free hamburgers.”A clerk comes but he can't understand what they say. He asked them: “May I help you?”Mary and Jean just laugh. What fun it is to create something new.

小学学科试题库

初中学科试题库

高中学科试题库