A.a任意,b=0
B.a任意,b=-1
C.
D.
[单选题]A.cotx-tanx+CB.cotx+tanx+CC.-cotx-tanx+CD.-cotx+tanx+C
[单选题]A.cotx-tanx+CB.cotx+tanx+CC.-cotx-tanx+CD.-cotx+tanx+C
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)