2011SP-II-08
Ans: A
I is correct. $f(x)>k$ means the part of $y=f(x)$ a
… Read I is correct. $f(x)>k$ means the part of $y=f(x)$ a
HKDSE-MATH - 2011SP - Paper 2 -
2011SP-II-09
Ans: C
$\begin{array}{rcl}
5-2x & < & 3 \\ -2x & < & -2 \\ x & > & 1
\end{arra
… Read $\begin{array}{rcl}
5-2x & < & 3 \\ -2x & < & -2 \\ x & > & 1
\end{arra
2011SP-II-10
Ans: A
Let $\$x$ and $\$y$ be the costs of the gained bag and th
… Read Let $\$x$ and $\$y$ be the costs of the gained bag and th
2011SP-II-11
Ans: C
$\begin{array}{rcl}
a_1 & = & 4 \\
a_2
… Read $\begin{array}{rcl}
a_1 & = & 4 \\
a_2
2011SP-II-12
Ans: B
Let $l_0$, $w_0$ and $A_0$ be the original length, wid
… Read Let $l_0$, $w_0$ and $A_0$ be the original length, wid
2011SP-II-13
Ans: D
$\begin{array}{rcl}
2x & = & 3y \\
y &
… Read $\begin{array}{rcl}
2x & = & 3y \\
y &
2011SP-II-14
Ans: C
Note that $z=\dfrac{kx}{y}$, where $k$ is a non-zero
… Read Note that $z=\dfrac{kx}{y}$, where $k$ is a non-zero
2011SP-II-15
Ans: B
Since the maximum absolute error of the three sides ar
… Read Since the maximum absolute error of the three sides ar
2011SP-II-16
Ans: B
In $\Delta OAB$, as $OA=AB$,
… Read In $\Delta OAB$, as $OA=AB$,
$\begin{array}{rcl}
\a
2011SP-II-17
Ans: A
For the right circular cylinder,
… Read For the right circular cylinder,
$\begin{array}{rc
2011SP-II-18
Ans: B
Consider the area of $ABCD$,
… Read Consider the area of $ABCD$,
$\begin{array}{rcl}
DT
2011SP-II-19
Ans: A
$\begin{array}{cl}
& \dfrac{\sin\theta}{\c
… Read $\begin{array}{cl}
& \dfrac{\sin\theta}{\c
2011SP-II-20
Ans: A
Add a point $G$ such that $AG\perp GF$. Note that
… Read Add a point $G$ such that $AG\perp GF$. Note that
$\beg
2011SP-II-21
Ans: B
$\because AB$ is the diameter,
… Read $\because AB$ is the diameter,
$\therefore \angle AC
2011SP-II-22
Ans: C
Join $OE$.
… Read Join $OE$.
$\begin{array}{rcl}
\angle AOE & = &
2011SP-II-23
Ans: B
Note that $\Delta EFD \sim \Delta EBC$. Therefore, we
… Read Note that $\Delta EFD \sim \Delta EBC$. Therefore, we
2011SP-II-24
Ans: D
In $\Delta ABD$,
… Read In $\Delta ABD$,
$\begin{array}{rcl}
\angle BDA �
2011SP-II-25
Ans: A
The 6-sided polygon on the right rotates anti-clockw
… Read The 6-sided polygon on the right rotates anti-clockw
2011SP-II-26
Ans: D
$\begin{array}{|c|c|} \hline
\mbox{Rotation anti
… Read $\begin{array}{|c|c|} \hline
\mbox{Rotation anti
2011SP-II-27
Ans: D
According to the box-and-whisker diagram, the lower
… Read According to the box-and-whisker diagram, the lower