A. f is differentiable at all points of its domain except x=4
B. f is differentiable on(2,∞)
C. f is differentiable in (-∞,∞)
D. f'(x)=0 for all x ε[2,6)
d/dx{x1/x}=
d/dx {Tan-14x/1+5x2+Tan-12+3x/3-2x}=
If x2+y2=a2 then dy/dx=
If y=(x+√x2-1)m then (x2-1)y2+xy1=
The derivative of cosec-1(ax)w.r.to x is