y = 0.6667

ySym =

                      

                       $$\frac{\mathrm{日志}\left(x^{1/3}\right)}{\mathrm{日志}\left(2\right)}$$
                     

yVal =

                      

                       $$\frac{\mathrm{日志}\left(4^{1/3}\right)}{\mathrm{日志}\left(2\right)}$$
                     

ans =

                      

                       $$\frac{2}{3}$$
                     

X =

                      

                       $$\left(\begin{array}{ccc}1& \frac{2^{\mathrm{一个}}}{2}& \frac{5}{7}\end{array}\right)$$
                     

F =

                      

                       $$\left(\begin{array}{ccc}\frac{1}{2}& \frac{\frac{1}{2^{\lfloor \frac{\mathrm{日志}\left(\frac{2^{\mathrm{一个}}}{2}\right)}{\mathrm{日志}\left(2\right)}\rfloor +1}}{2}^{\mathrm{一个}}}{2}& \frac{5}{7}\end{array}\right)$$
                     

E =

                      

                       $$\left(\begin{array}{ccc}1& \lfloor \frac{\mathrm{日志}\left(\frac{2^{\mathrm{一个}}}{2}\right)}{\mathrm{日志}\left(2\right)}\rfloor +1& 0\end{array}\right)$$
                     

F =

                      

                       $$\left(\begin{array}{ccc}\frac{1}{2}& 2^{\mathrm{一个}-\; -\; -\; -\; -\; -\lfloor \mathrm{一个}\rfloor -\; -\; -\; -\; -\; -1}& \frac{5}{7}\end{array}\right)$$
                     

E =
                      $$\left(\begin{array}{ccc}1& \lfloor \mathrm{一个}\rfloor & 0\end{array}\right)$$