Make all lines at a point a on the curve y = x * 2 (x is greater than or equal to 0) so that the area enclosed by the curve and X axis is 1 / 12. Try to find the tangent point a and tangent square

Make all lines at a point a on the curve y = x * 2 (x is greater than or equal to 0) so that the area enclosed by the curve and X axis is 1 / 12. Try to find the tangent point a and tangent square

A on the curve y = x & sup2; (x ≥ 0), let a (a, a & sup2;) take point a as tangent, and the tangent equation is y = 2ax-a & sup2; the area bounded by the tangent intersection X-axis at (A / 2,0) = ∫ (0, a) X & sup2; DX - ∫ (A / 2, a) (2ax-a & sup2;) DX = (X & sup3 / / 3) │ (0, a) - (AX & sup2; - A & sup2; x) │ (A / 2, a) = [(A & S