The solution set of 16−x2≥0 is
If the equation x2+λx+μ=0 has equal roots and one root of the equation x2+λx−12=0 is 2,then (λ,μ)=
The coordinates of the point of contact of the tangent to the parabola y2=16x, which is perpendicular to the line 2x−y+5=0 are