y2sinxcosx的精选

问题详情：曲线y=2sinx+cosx在点(π，–1)处的切线方程为A．                                     B．C．                                 D．【回答...

问题详情：曲线y=2sinx+cosx在点(π，-1)处的切线方程为A．                      B．C．                   D．【回答】C      知识点：高考试题题型：选择题...