A. (sin x)x[x cot x+ log sin x]
B. (sin x)x[x cot x-log sin x]
C. -(sin x)x[x cot x+ log sin x]
D. -(sin x)x[x cot x-log sin x]
If |x|<1 then d/dx[1+px/q+p(p+q)/2!(x/q)2+p(p+q)(p+2q)/3! (x/q)3+...]
Let f(x)=1/|x| for |x| ≤1, f(x)=ax2+b for |x|>1. If f is differentiable at any point, then
The derivative of Tan-1√(1+x2)-1/x w.r.to Tan-12x√(1-x2)/(1-2x2) at x=0 is
If cos x/2 . cos x/22. Cos x/23.... cos x/2n= sin x/2nsin (x/2n) then (1/22)sec2x/2+(1/24) sec2x/22...(1/22n)sec2x/2n=
If ax2+2hxy+by2=1 then (hx+by)3y2=
d/dx{Tan-1(acos x-bsin x/b cos x+a sin x)}=
If sin2 mx+cos2 ny=a2 then dy/dx=
If x=sin-1t, y= √(1-t2) then d2y/dx2=
The derivative of cos hx/2w.r.to x is
If P(x)is a polynomial of 3rd degree and P’’(1)=0, P’’’(1)=6 then P’’(0)=