Discussion of Serval Issues for Pure Beam Deflection Curve by Metheds of Graph Multiplication and Double Integral
用图乘法和重积分法求纯弯曲梁挠曲线问题的讨论

The accuracy key to the deflection curve of a uniform section straight beam subjected to the moment is a circle,however,the answers are both parabolas by metheds of graph multiplication and double integral .The reasons are analysed,and the error is given with a parabola replacing a circle.