我所要求的只是替代方案，而不是让我们所有人都走上学习微积分的道路。

All that I ask is that alternatives be offered instead of putting all of us on the road to calculus.

youdao

所要做的功,就等于A到B的,我的力的积分,这是个点积。

So the work that Walter Lewin has to do to bring it from A to B is the integral in going from A to B of my force, dx.

youdao