2017-I-15
答案:$x=3^{y+2}$
由於 $G$ 通過 $(243, 3)$,則可得
… Read 由於 $G$ 通過 $(243, 3)$,則可得
$\begin{array}{r
$\begin{
$\begin{array}{rcl}
6 – x & < & 2x - 3 \\
9 & < & 3x \\
x & > &
$\begin{array}{rcl
$\begin{array}{rcl}
y & = & (px+
$\begin{array}{cl}
= & 2000 \times ( 1 + \df
$\begin{array}{cl}
= & 1 : 20\ 000
當 $x=1$ 時,$y
$\begin{array}{rcl}
\df
$\