I start with Special one. I arrive, with 3 simple operations, to the equation T=t/square root of 1-v2/c2 setting the first equivalence with logical reasoning as simple. The semplification with the Pitagora theoreme is, instead, wrong and improper; for now, just think that the traveler, if he knows just his time, can't never know the time of the observer, if he doesn't already know the formula of Lorents-Poincaré; with my simplification, instead, we just have to know the time or of the traveler or of the observer, and we shall simply know the time of the other one.
I do the same with the General one, coming to the formula T=t/square root of 1- 2GM/Rc2. From that follows that the time dilation in the General depends, as in Special one, not on the acceleration, but on the real or potential speed of the body depending on the distance of the body from the gravitational mass that attracts him. In fact this real or potential speed coincides perfectly with the escape velocity of the body from the mass.