y=lg(sinx+根号3/2)定义域

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y=lg(sinx+根号3/2)定义域y=lg(sinx+根号3/2)定义域y=lg(sinx+根号3/2)定义域sinx+根号3/2>0sinx>-根号3/2x∈(2kπ-π/3,2kπ+π/3)(

y=lg(sinx+根号3/2)定义域
y=lg(sinx+根号3/2)定义域

y=lg(sinx+根号3/2)定义域
sinx+根号3/2>0
sinx>-根号3/2
x∈(2kπ-π/3,2kπ+π/3) (k∈Z)

R减去{(2K+1)PI+PI/3,(2K+1)PI+2PI/3}

根号是3的根号吗?是:(2kπ-π/3,2kπ+4π/3),k任意正数;不是:无穷