Thread 'How to find path if we only know velocity (without common formulation)?' Hello there! I invented the situation and I attempt to solve it: Enable we only know velocity of transferring particle: ##v(t)## from ##t=a## to ##t=b##. There is apparently no technique for simplifying or rearranging the integral. Integration https://gabletoppak.com/water-in-a-sustainable-box-the-future-of-eco-friendly-hydration/