Question
If the sum of all the roots of the equation
${e^{2x}} - 11{e^x} - 45{e^{ - x}} + {{81} \over 2} = 0$ is ${\log _e}p$, then p is equal to ____________.
Correct Answer
45
If the sum of all the roots of the equation
${e^{2x}} - 11{e^x} - 45{e^{ - x}} + {{81} \over 2} = 0$ is ${\log _e}p$, then p is equal to ____________.