2015-II-01
答案:D
$\begin{array}{cl}
& (x+1)(x^2 + x +1) \\
= &
… Read $\begin{array}{cl}
& (x+1)(x^2 + x +1) \\
= &
$\begin
留意圖像的 $x$ 截距在負 $x$ 軸之上,所以其根必為負數。考
$\begin{array}{cl}
= & x
$\begin{array}{cl}
= & 50\ 000 \times (1 +
$\begin{
$\begin{array}{rcl}
CD^2
設 $x\text{ cm}$ 為該平截頭體上底的半徑。由此,可得
$\begin{array}{r
由此,$AF// BG$。
考慮 $\Delt
$\begin{array}{rcl}
\tan \beta
連結 $AC$。
$\begin{array}{ll}
BC = CD & \text{(已知)