问题
填空题
已知函数f（x）=2sinx，g（x）=sin（
|
答案
|MN|=|f（x）-g（x）|=|2sinx-sin（
-x）|=|2sinx-cosx|=|π 2
sin（x-ϕ）|．（其中tanϕ=5
）1 2
故|MN|的最大值是
．5
故答案为：5
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已知函数f（x）=2sinx，g（x）=sin（
|
|MN|=|f（x）-g（x）|=|2sinx-sin（
-x）|=|2sinx-cosx|=|π 2
sin（x-ϕ）|．（其中tanϕ=5
）1 2
故|MN|的最大值是
．5
故答案为：5
| 用方框中所给词的适当形式填空。 | |
2. Miss Zhang is kind. She is ________ to every student, we all like her. 3. Wang Tao is a ________ boy. He is the top student in his class. 4. Be ________ when you are speaking in front of people. 5. I often ________ of going to Qinghua University. 6. He is the man who is taking ________ computer into ever  yone's home. 7. He is very ________ and can make everyone happy. 8. Yao Ming often ________ his name for the basketball fans. 9. The parents should ________ their child well. 10. In 1990, my uncle ________ the university. |