f(cosx)=cos17x .证明f(sinx)=sin17x
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 22:41:59
![f(cosx)=cos17x .证明f(sinx)=sin17x](/uploads/image/z/7017494-14-4.jpg?t=f%EF%BC%88cosx%EF%BC%89%3Dcos17x+.%E8%AF%81%E6%98%8Ef%EF%BC%88sinx%EF%BC%89%3Dsin17x)
f(cosx)=cos17x .证明f(sinx)=sin17x
f(cosx)=cos17x .证明f(sinx)=sin17x
f(cosx)=cos17x .证明f(sinx)=sin17x
f(sinx)
=f[cos(π/2-x)]
=cos[17(π/2-x)]
=cos(4×2π+π/2-17x)
=cos(π/2-17x)
=sin17x