If `k = ((cos^(-1)(3x-1))/pi +1)^2`, then k can be equal to

[" If "],[" f(x) "=sgn(3x cos^(-1)(x)-6cos^(-1)(x)-pi x+2 pi)],[" ,then the number of points "],[" of discontinuity of "f(x)" is/are "],[" [Note: sgn k denotes signum "],[" function of k.] "]

If int_(0)^(k) ( 1)/(9x^(2) + 1) dx = ( pi )/( 12) , then k is equal to

If an equation of tangent to the curve, y=cos(x+y), -1I le x le 1+pi, is x+2y=k then k is equal to :

if int_ (-1//2) ^( 1//2) cos x log ((1 + x )/(1- x )) dx = k. log 2, then k equal to :

If cos3x+sin(2x-(7 pi)/(6))=-2, then x is equal to (k in Z)(pi)/(3)(6k+1)( b) (pi)/(3)(6k-1)(pi)/(3)(2k+1)( d ) none of these

If cos3x+sin(2x-(7pi)/6)=-2 , then x is equal to (k in Z) pi/3(6k+1) (b) pi/3(6k-1) pi/3(2k+1) (d) none of these