Δ t > 0

[ 1 , 1 + Δ t ]

Δ t

平均速度 v ¯

[ 1 , 1.01 ]

0.01

−3.349

[ 1 , 1.001 ]

0.001

−3.3049

[ 1 , 1.0001 ]

0.0001

−3.30049

[ 1 , 1.00001 ]

0.00001

−3.300049

[ 1 , 1.000001 ]

0.000001

−3.3000049

Δ t < 0

[ 1 + Δ t , 1 ]

Δ t

平均速度 v ¯

[ 0.99 , 1 ]

−0.01

−3.251

[ 0.999 , 1 ]

−0.001

−3.2951

[ 0.9999 , 1 ]

−0.0001

−3.29951

[ 0.99999 , 1 ]

−0.00001

−3.299951

[ 0.999999 , 1 ]

−0.000001

−3.2999951