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>For the parabola y=x^2 and a>0, consider the normal line to the parabola at P = (a, a^2), which intersects again at Q. Find the value of a that minimizes.
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>The y-coordinate of the centroid of the parabolic segment.( The x-coordinate of the centroid is always x = -1/4a )
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이제서야 봤습니다..
원문을 올려 주세요..
Q도 정의가 없고.. 문제를 이해하기에 부족하군요..