A. sec2x[1+2√tan x]/(4√tan2 x+ tan x √tan x)
B. sec2 x[1-2√tan x]/ (4√tan2 x+ tan x √tan x)
C. sec x[1+2√tan x]/ (4√tan2x+tan x √tan x)
D. sec x[1-2√tan x]/ (4√tan2x+tan x √tan x)
d/dx{sin x/ 1+ cos x}=
d/dx{Tan-1(x/1+√1-x2)}=
If x<1 then (1-2x/1-x+x2)+(2x-4x3/1-x2+x4)+(4x3-8x7/1-x4+x8)+...∞=
If y= ax2+b/x then x2y2=
If x= a cos θ (1+cos θ), y=sin θ(1+cos θ) then (dy/dx)θ=π/2
The derivative of √(Tan-1 x) w.r.to x is
If x2+xy+y2=a2, then y2=
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If x= 2/t2, y=t3-1, then d2y/dx2=
If y= xsin x+(sin x)x then dy/dx=