2021-12-21 TAG: costDT2Tcosasintdt科學計算∫L(2a-y)dx-(a-y)dy,L;擺線x=a(t-sint),y=a(1-cost)從點O(0,0)到點B(2πa,0)。過程?/2)∫<0,2π>[1-cos(2t)-sin(2t)]dt =(a...檢視全文»