2012PP-II-06
Ans: C
The quadratic equation has equal roots, then $\Delta
… Read The quadratic equation has equal roots, then $\Delta
HKDSE-MATH - 2012PP - Paper 2 -
2012PP-II-08
Ans: D
I is false. According to the figure, the graph opens do
… Read I is false. According to the figure, the graph opens do
2012PP-II-33
Ans: C
Note that $\alpha + \beta = k$ and $\alpha\beta = 3$. He
… Read Note that $\alpha + \beta = k$ and $\alpha\beta = 3$. He
2013-II-06
Ans: C
$\begin{array}{rcl}
(x-k)^2 & = & 4k^2 \\
… Read $\begin{array}{rcl}
(x-k)^2 & = & 4k^2 \\
2013-II-07
Ans: B
Note that $b$ is the $y$-intercept of the graph. There
… Read Note that $b$ is the $y$-intercept of the graph. There
2013-II-35
Ans: D
According to the given system of equations, $\alpha$
… Read According to the given system of equations, $\alpha$
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-35
Ans: D
It is given that the $y$-coordinate of the vertex of th
… Read It is given that the $y$-coordinate of the vertex of th
2015-II-07
Ans: A
Since $\beta$ is a root of the equation $4x^2 -5x ̵
… Read Since $\beta$ is a root of the equation $4x^2 -5x ̵
2015-II-08
Ans: D
Since the graph opens upwards, then $a>0$.
… Read Since the graph opens upwards, then $a>0$.
Note th
2015-II-34
Ans: B
Since $\alpha$ and $\beta$ are the roots of the quadra
… Read Since $\alpha$ and $\beta$ are the roots of the quadra
2016-II-08
Ans: C
Since the quadratic equation $x^2+kx+8k+36=0$ has e
… Read Since the quadratic equation $x^2+kx+8k+36=0$ has e
2016-II-09
Ans: D
$\begin{array}{rcl}
y & = & (ax+1)^2 + a \\
y &
… Read $\begin{array}{rcl}
y & = & (ax+1)^2 + a \\
y &
2017-II-09
Ans: C
Consider the function of the graph.
… Read Consider the function of the graph.
$\begin{array}{