已知f(x)=2√3sinx+sin2x/sinx

1、f(x) = 2√3sinx+2cosx = 4sin(x + π/6) f(x)的最大值为4,此时x∈{x| x= π/3 +2kπ,k∈Z}.
2、由f(x)= 2bc -bc =bc
所以bc