" The range of "k" for which the inequality "k cos^(2)x-k cos x+1>=0AA x in(-oo,oo)," is : "

Th range of k for which the inequaliity kcos^2x-kcosx+1>=0 AA x in(-oo,oo) is

Th range of k for which the inequaliity kcos^2x-kcosx+1>=0 AA x in(-oo,oo) is

Th range of k for which the inequaliity kcos^2x-kcosx+1>=0 AA x in(-oo,oo) is

Th range of k for which the inequaliity kcos^2x-kcosx+1>=0 AA x in(-oo,oo) is

The range of k for which the inequaliity kcos^2x-kcosx+1>=0 AA x in(-oo,oo) is

The range of k for which the inequality kcos^2x-kcosx+1>=0AAxepsilon(-oo,oo) is:

The integer k ,for which the inequality x^(2)-2(3k-1)x+8k^(2)-7>0 is valid for every x in R is

The value of k, for which (cos x+ sin x)^(2) +k sin x cos x-1 =0 is an identity, is

The exhaustive set of values of a for which inequation (a -1)x^2- (a+1)x+ a -1>=0 is true AA x >2 (a) (-oo,1) (b)[7/3,oo) (c) [3/7,oo) (d) none of these