.函数y=sin(x+π/3)的图像向右平移π/3个单位得曲线C1,即有y1=sin(x+Pai/3-Pai/3)=sinx.曲线C1按向量a=（3π/2,1）平移得曲线C2：y=f(x ),则有y-1=sin(x-3Pai/2)=cosx
函数fx是解析式为f(x)=cosx+1