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27. μ’Œν‘œν‰λ©΄ μœ„λ₯Ό μ›€μ§μ΄λŠ” 점 $\mathrm{P}$의 μ‹œκ° $t \ (t>0)$μ—μ„œμ˜ μœ„μΉ˜κ°€ 곑선 $y = x^2$κ³Ό 직선 $y = t^2 x - \frac{\ln t}{8}$κ°€ λ§Œλ‚˜λŠ” μ„œλ‘œ λ‹€λ₯Έ 두 점의 쀑점일 λ•Œ, μ‹œκ° $t=1$μ—μ„œ $t=e$κΉŒμ§€ 점 $\mathrm{P}$κ°€ 움직인 κ±°λ¦¬λŠ”? [3점]

\begin{itemize}
    \item[1] $\frac{e^4}{2} - \frac{3}{8}$
    \item[2] $\frac{e^4}{2} - \frac{5}{16}$
    \item[3] $\frac{e^4}{2} - \frac{1}{4}$
    \item[4] $\frac{e^4}{2} - \frac{3}{16}$
    \item[5] $\frac{e^4}{2} - \frac{1}{8}$
\end{itemize}