The equation `sin^4x+cos^4x+sin2x+alpha=0` is solvable for `-5/2lt=alphalt=1/2` (b) `-3lt=alpha<1` `-3/2lt=alphalt=1/2` (d) `-1lt=alphalt=1`

The equation sin^4 x + cos^4 x + sin2x + alpha = 0 is solvable for

The equation sin^(4)x+cos^(4)x+sin2x+alpha=0 is solvable for -(5)/(2)<=alpha<=(1)/(2)(b)-3<=alpha<1-(3)/(2)<=alpha<=(1)/(2)(d)-1<=alpha<=1

The equation sin^(4) x + cos^(4) x + sin 2 x + alpha = 0 is solvable for

The range of alpha for which the equation sin^(4)x+cos^(4)x+sin2x+alpha=0 has solution

If y=(sin^4x-cos^4x+sin^2xcos^2x)/(sin^4x+cos^4x+sin^2xcos^2x),x in (0,pi/2) , then (a) -3/2lt=ylt=1/2 (b) 1lt=ylt=1/2 (c) -5/3lt=ylt=1 (d) none of these

If y=(sin^4x-cos^4x+sin^2xcos^2x)/(sin^4x+cos^4x+sin^2xcos^2x),x in (0,pi/2) , then (a) -3/2lt=ylt=1/2 (b) 1lt=ylt=1/2 (c) -5/3lt=ylt=1 (d) none of these

If y=(sin^4x-cos^4x+sin^2xcos^2x)/(sin^4x+cos^4x+sin^2xcos^2x),x in (0,pi/2) , then (a) -3/2lt=ylt=1/2 (b) 1lt=ylt=1/2 (c) -5/3lt=ylt=1 (d) none of these

If the equation k sin x + sqrt(k-2)cos x+(tan alpha+cot alpha)=0, 0 lt alpha lt(pi)/(2) , possesses real solution, then k belongs to

If the equation k sin x + sqrt(k-2)cos x+(tan alpha+cot alpha)=0, 0 lt alpha lt(pi)/(2) , possesses real solution, then k belongs to