Define a parabola C by y=x2+1 on the coordinate plane. Let s, t be real numbers with t<0. Denote by l1, l2 the tangent lines drawn from the point (s, t) to the parabola C.(1) Find the equations of the tangents l1, l2.(2) Let a be positive real number. Find the pairs of (s, t) such that the area of the region enclosed by C, l1, l2 is a. calculusintegrationconicsparabolaanalytic geometrygeometrycalculus computations