∫y^2ds,其中L为摆线的一拱x=a(t-sint),y=a(1-cost),(0
问题描述:
∫y^2ds,其中L为摆线的一拱x=a(t-sint),y=a(1-cost),(0
答
As follows:
∫y^2ds,其中L为摆线的一拱x=a(t-sint),y=a(1-cost),(0
As follows: