I was reading about Integral equations, and I found this excerpt in Portuguese Wikipedia:
"integral equations serve to determine the position in all instances of an object, if known, its instantaneous velocity at all times"
But reading about the Uncertainty Principle, I found this excerpt:
For instance, in 1927, Werner Heisenberg stated that the more precisely the position of some particle is determined, the less precisely its momentum can be known, and vice versa.
What's wrong in my conclusion? Really the two principles contradict each other?