The number of values of the triplet `(a, b, c)` for which a `cos 2x + b sin^2 x + c = 0` is satisfied by all real x, is

The number of values of the triple (a,b,c) for which a coss 2x+bsin^2 x+c =0 is satisfied by all real x, is

The number of integral triplets (a, b, c) such that a+b cos 2x+c sin^(2)x=0 for all x, is

The number of integral triplets (a, b, c) such thet a+b cos 2x+c sin^(2)x=0 for all x, is

The number of points in (-oo, oo) , for which x^(2) - x sin x - cos x = 0 , is a)6 b)4 c)2 d)0

The number of real values of x for which ((a)/(b))=x-2x^(2)-4, where a,b>0

The number of points in (-oo,oo), for which x^(2)-x sin x-cos x=0, is 6(b)4(c)2(d)0

The number of all the possible triplets (a_(1),a_(2),a_(3)) such that a_(1)+a_(2)cos(2x)+a_(2)sin^(2)(x)=0 for all x is 0 (b) 1(c)3(d) infinite

Number of integral values of 'b' for which inequality (a^2 + 1)x^2 + 4(a+b)x +2 < 0 is true for atleast one 'x' and for all Real a, is (A)0 (B) 1 (C) 2 (D)3

If 0 le x le 2pi , then the number of real values of x, which satisfy the equation cos x + cos 2x + cos 3x + cos 4x=0 , is

If 0 le x le 2pi , then the number of real values of x, which satisfy the equation cos x + cos 2x + cos 3x + cos 4x=0 , is