已知函数f(x)=sinx+,则(    ) A. f(x)的最小值为2            

已知函数f(x)=sinx+,则(   

A. f(x)的最小值为2                                                    B. f(x)的图像关于y轴对称

C. f(x)的图像关于直线对称                               D. f(x)的图像关于直线对称

答案

D

【解析】

【分析】

根据基本不等式使用条件可判断A;根据奇偶性可判断B;根据对称性判断C,D.

【详解】可以为负,所以A错;

关于原点对称;

B错;

关于直线对称,故C错,D

故选:D

【点睛】本题考查函数定义域与最值、奇偶性、对称性,考查基本分析判断能力,属中档题.

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