已知函数f(x)=2sin(3x+y)若f(π/3)=根号2,则f(3π)=

问题描述:

已知函数f(x)=2sin(3x+y)若f(π/3)=根号2,则f(3π)=

f(π/3)=2sin(π+y)=-2siny=√2
f(3π)=2sin(9π+y)=-2siny=√2