Euler: Point diff @ 0.1470067554878007, end diff @ 0.49737244764885347.
Modified Euler: Point diff @ 1.9920977079185658e-22, end diff @ 0.0026275523512602206.
RK4: Point diff @ 1.9926361270567946e-22, end diff @ 0.0026275523512602206.