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If $(4,7)\;\;,(2,0)\;\;,(1,3)$ are the coordinates of foots of perpendicular drawn from a vertices's to the opposite sides

Then the coordinates of the vertices's of a Triangle are

If $f(x)$ is a Continuous function and $\displaystyle F(x) = \int_{0}^{x}\left((2t+3)\cdot \int_{1}^{2}f(u)du\right)dt\;,$ Then $|F''(x)|\cdot |f(2)| = $