A.39
B.40
C.41
D.42
[单选题]A.△y>dy>0B.△y<dy<1C.△y<dy<-1D.△y>dy<2
[单选题]A.△y>dy>0B.△y<dy<1C.△y<dy<-1D.△y>dy<2
[单选题]A.△y>dy>0B.△y<dy<1C.△y<dy<-1D.△y>dy<2
[单选题]A.△y>dy>0B.△y<dy<1C.△y<dy<-1D.△y>dy<2
[单选题]A.△y>dy>0B.△y<dy<1C.△y<dy<-1D.△y>dy<2
[单选题]A.x=0必是g(x)的第一类间断点B.x=0必是g(x)的第二类间断点C.x=0必是g(x)的连续点D.g(x)在点x=0处的连续性与a的取值有关