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任意角三角函数的概念

> 已知函数 f(x)=sinx+bcos2 x 2 ，b为常数，b∈R，且 x= π 2 是方程f（x）=0的解．（Ⅰ）求函数f（x）的最小正周期；（Ⅱ）当x∈[0，π]时，求函数f（x）值域．

问题：

发布时间：2024-09-10

已知函数 f(x)=sinx+bcos2

x

2

，b为常数，b∈R，且 x=

π

2

是方程f（x）=0的解．
（Ⅰ）求函数f（x）的最小正周期；
（Ⅱ）当x∈[0，π]时，求函数f（x）值域．

参考答案：

提问用户：co***vjx

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已知函数 f(x)=sinx+bcos2 x 2 ，b为常数，b∈R，且 x= π 2 是方程f（x）=0的解． （Ⅰ）求函数f（x）的最小正周期； （Ⅱ）当x∈[0，π]时，求函数f（x）值域．

可能感兴趣的题目：

已知函数 f(x)=sinx+bcos2

x

2

，b为常数，b∈R，且 x=

π

2

是方程f（x）=0的解．
（Ⅰ）求函数f（x）的最小正周期；
（Ⅱ）当x∈[0，π]时，求函数f（x）值域．