The set of positive real values of the parameter 'a' for which the equation |sin2x|-|x|-a=0 does not have any real solution is
(3√3−π6,∞)
Let us first consider the case when y=|sin2x|, y=|x|+a touch each other.
If P is the point of contact, then at point P,
we have 1= 2cos2x (i.e slopes are equal)
cos2x=12⇒x=π6∴P=(π6,√32)
Now P lies on y=x+a
⇒√32=π6+a⇒a=3√3−π6
∴ For not to touch a∈(3√3−π6,∞)