点P（π/4,t）在y=sin(2x-π/3)上t=sin(2*π/4-π/3)=sinπ/6=1/2y=sin(2x-π/3)=sin[2(x-π/6)]=sin2x' x=x'+π/6+2kπs=π/6+2kπs的最小值 为π/6
具体可以咨询银行。
