The number of solutions of the equation ∣∣∣sinπ2(1−x)+cosπ2(1−x)∣∣∣=√∣∣loge|x|3+1∣∣ ∀ x>0 is
The number of pairs (x,y) satisfying the equation sinx+siny=sin(x+y), |x|+|y|=1is