$v=\left(\left(v^{\prime}\right)^{\frac23}-\frac{2ct}{3M}\right)^{\frac32};$ $x=\left(-\frac{3M}{5c}\right)\left\lbrack\left(\left(v^{\prime}\right)^{\frac23}-\left(\frac{2ct}{3M}\right)\right)^{\frac52}-\left(v^{\prime}\right)^{\frac53}\right\rbrack$

$v=\left(\left(v^{\prime}\right)^{\frac23}-\frac{2ct}{3M}\right)^{\frac32};$ $x=\left(-\frac{3M}{5c}\right)\left\lbrack\left(\left(v^{\prime}\right)^{\frac23}-\left(\frac{2ct}{3M}\right)\right)^{\frac52}\right\rbrack$

$v=\left(\left(v^{\prime}\right)^{\frac23}+\frac{2ct}{3M}\right)^{\frac32};$ $x=\left(-\frac{3M}{5c}\right)\left\lbrack\left(\left(v^{\prime}\right)^{\frac23}-\left(\frac{2ct}{3M}\right)\right)^{\frac52}\right\rbrack$

$v=\left(\left(v^{\prime}\right)^{\frac23}-\frac{2ct}{3M}\right)^{\frac32};$ $x=\left(-\frac{M}{c}\right)\left\lbrack\left(\left(v^{\prime}\right)^{\frac23}-\left(\frac{2ct}{3M}\right)\right)^{\frac52}-\left(v^{\prime}\right)^{\frac53}\right\rbrack$