Respuesta :

[tex]9e^{2f}=49[/tex]
[tex]e^{2f}=\dfrac{49}9[/tex]
[tex](e^{2f})^{1/(2f)}=\left(\dfrac{49}9\right)^{1/(2f)}[/tex]
[tex]e=\left(\dfrac{49}9\right)^{1/(2f)}[/tex]