Show that the tangent to the parabola Y=Ax^2 (for A does not
equal 0) at the point where x = c will intersect the x axis at
the point (c/2 , 0 . Where does it intersect the y axis. To find
the tangent find the derivative of at which isOriginally Posted
by frozenflames Thus, the slope of the tangent line is . Now use
the formula for finding equations of line by knowing thier
slopes and the point that they pass through. That formula is
this tangent line has slope and passes through the point of
tangentcy thus Thus, the equation of the tangent line is thus,
now set because this is the x-intercept thus solve for thus