2014-II-02
Ans: A
$\begin{array}{cl}
& u^2 – v^2 -5u + 5v \\
… Read $\begin{array}{cl}
& u^2 – v^2 -5u + 5v \\
HKDSE-MATH - 2014
2014-II-03
Ans: B
$\begin{array}{rcl}
px(x-1)+x^2 & \equiv �
… Read $\begin{array}{rcl}
px(x-1)+x^2 & \equiv �
2014-II-04
Ans: B
$\begin{array}{rcl}
x^2 + ax +a & = & 1 \\
x^
… Read $\begin{array}{rcl}
x^2 + ax +a & = & 1 \\
x^
2014-II-05
Ans: C
Note that the graph opens upwards, then $m>0$. Not
… Read Note that the graph opens upwards, then $m>0$. Not
2014-II-06
Ans: D
I may not be true. Suppose $a=3$ and $b=-6$. It is obvio
… Read I may not be true. Suppose $a=3$ and $b=-6$. It is obvio
2014-II-07
Ans: C
The compound inequality is equivalent to $-3x < 6$ and $6 < 2x$. Then, we have
… Read The compound inequality is equivalent to $-3x < 6$ and $6 < 2x$. Then, we have
$\begi
2014-II-08
Ans: A
Let $\$x$ and $\$y$ be the price of a bowls and a cup resp
… Read Let $\$x$ and $\$y$ be the price of a bowls and a cup resp
2014-II-09
Ans: A
Let $x$ be the number of male workers.
… Read Let $x$ be the number of male workers.
Then the number o
2014-II-10
Ans: C
Let $\theta$ and $r\text{ cm}$ be the angle and the rad
… Read Let $\theta$ and $r\text{ cm}$ be the angle and the rad
2014-II-11
Ans: A
Note that the maximum absolute error is $0.5\text{ cm
… Read Note that the maximum absolute error is $0.5\text{ cm
2014-II-12
Ans: D
The compound equation is equivalent to $\dfrac{4}{5
… Read The compound equation is equivalent to $\dfrac{4}{5
2014-II-13
Ans: C
Let $z=\dfrac{ky^3}{x}$, where $k$ is a non-zero con
… Read Let $z=\dfrac{ky^3}{x}$, where $k$ is a non-zero con
2014-II-14
Ans: D
By the given formula, we have
… Read By the given formula, we have
$\left\{ \begin{array}
2014-II-15
Ans: C
Since $BC=CD=DE$ and $\angle BCD = 90^\circ$, then $B
… Read Since $BC=CD=DE$ and $\angle BCD = 90^\circ$, then $B
2014-II-16
Ans: C
Consider $\Delta DAE$ and $\Delta DCG$,
… Read Consider $\Delta DAE$ and $\Delta DCG$,
$\begin{arr
2014-II-17
Ans: D
… Read $BD$ is produced and intersects $EC$ at $F$. Note that
2014-II-18
Ans: A
In $\Delta ABC$, we have
… Read In $\Delta ABC$, we have
$\begin{array}{rcl}
\tan \t
2014-II-19
Ans: A
$\begin{array}{cl}
& (\cos(90^\circ+\theta
… Read $\begin{array}{cl}
& (\cos(90^\circ+\theta
2014-II-20
Ans: B
… Read Join $CD$. Since $AC$ is a diameter, then $\angle ADC =
2014-II-21
Ans: A
Since $AB=CD=EF$, then the distances between the cen
… Read Since $AB=CD=EF$, then the distances between the cen