设函数y=Asin(wx+fei)+b(A>0,w>0,|fei|

A+b=7/3-A+b=-2/3所以A=3/2 b=5/6T=2(11pai/3-5pai/3)=4pai2pai/w=4pai所以w=1/2y=3/2sin(x/2+fei)+5/6又当x=5pai/3时,y有最大值7/3所以7/3=3/2sin(5pai/3/2+fei)+5/6sin(5pai/3/2+fei)=1 5pai/6+fei=pai/2+2kpai因...