曲线在点(0,-1)处的切线方程为 ________.
暂无解析
I'msorryIforgottowrite;Ihadsomuchelse________mymind.
设函数y=y(x)由参数方程
()
Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
若函数在x=0处连续,则()