求下列函数的定义域 (1)y=根号下sinxtanx (2) y=lgsin2x+根号下9-x^2
问题描述:
求下列函数的定义域 (1)y=根号下sinxtanx (2) y=lgsin2x+根号下9-x^2
答
(1)(kπ-π/2,kπ+π/2);(2)(kπ,kπ+π/4)且x≠±3
求下列函数的定义域 (1)y=根号下sinxtanx (2) y=lgsin2x+根号下9-x^2
(1)(kπ-π/2,kπ+π/2);(2)(kπ,kπ+π/4)且x≠±3