Hans Georg Schaathun
Oktober 2016
I≈T1+T2+T3+T4+T5
T1=(x1−x0)⋅(y0+y1)/2
Ti=(xi−xi−1)⋅(yi−1+yi)/2
I≈(x1−x0)(y02+y1+y2+…+yn−1+yn2)
I=R1+R2+R3+R4+R5
R1=(x1−x0)⋅y1
Ri=(xi−xi−1)⋅yi
I=(x1−x0)(y1+y2+…+yn)