f(×)=sin2×+2(cos×+sin×)+3的值域怎么求?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 18:55:40
![f(×)=sin2×+2(cos×+sin×)+3的值域怎么求?](/uploads/image/z/8573519-47-9.jpg?t=f%28%C3%97%29%3Dsin2%C3%97%2B2%28cos%C3%97%2Bsin%C3%97%29%2B3%E7%9A%84%E5%80%BC%E5%9F%9F%E6%80%8E%E4%B9%88%E6%B1%82%3F)
f(×)=sin2×+2(cos×+sin×)+3的值域怎么求?
f(×)=sin2×+2(cos×+sin×)+3的值域怎么求?
f(×)=sin2×+2(cos×+sin×)+3的值域怎么求?
y=f(×)=sin2x+2(cos×+sin×)+3=2sinxcosx+2(cos×+sin×)+sin2x+cos2x+2=[sinx+cosx]2+2(cos×+sin×)+2 设m=sinx+cosx=根号2sin[x+45'] 则-根号2=