MathDB
Today's calculation of Integral 552

Source: 2010 Tokyo Medical University entrance exam

February 7, 2010
calculusintegrationconicsparaboladerivativeanalytic geometrygraphing lines

Problem Statement

Find the positive value of a a such that the curve C_1: x \equal{} \sqrt {2y^2 \plus{} \frac {25}{2}} tangent to the parabola C_2: y \equal{} ax^2, then find the equation of the tangent line of C1 C_1 at the point of tangency.