Быстрый ответ
$$x_{1} = - \frac{\sqrt{2}}{2} \sqrt{- y + 1} + 2$$
=
$$- \frac{1}{2} \sqrt{- 2 y + 2} + 2$$
=
2 - 0.707106781186548*(1 - y)^0.5
$$t_{1} = - \frac{\sqrt{2}}{2} \sqrt{- y + 1}$$
=
$$- \frac{1}{2} \sqrt{- 2 y + 2}$$
=
-0.707106781186548*(1 - y)^0.5
$$x_{2} = \frac{\sqrt{2}}{2} \sqrt{- y + 1} + 2$$
=
$$\frac{1}{2} \sqrt{- 2 y + 2} + 2$$
=
2 + 0.707106781186548*(1 - y)^0.5
$$t_{2} = \frac{\sqrt{2}}{2} \sqrt{- y + 1}$$
=
$$\frac{1}{2} \sqrt{- 2 y + 2}$$
=
0.707106781186548*(1 - y)^0.5