P-R 변형률 응력 곡선의 적분

P-R(Parabola-rectangel) 변형률 응력 곡선의 적분

https://millonario.tistory.com/entry/Calculate-Area-and-Centriod

Calculate Area and Centriod

 

 

Parabola-rectangle diagram Integration.pdf

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Parabola-rectangle diagram Integration.sm

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