Thread 'How to find route if we only know velocity (without having common formulation)?' Howdy! I invented the problem And that i attempt to unravel it: Let we only know velocity of transferring particle: ##v(t)## from ##t=a## to ##t=b##. Gable roofs are simple and easy to develop. These roofs require https://gabletoppak.com/why-i-switched-to-water-in-a-sustainable-box/