2022-I-12
Ans: (a) $20$ (b) (i) $GH$ is perpendicular to $GP$. (ii) $22
… Read HKDSE-MATH
2022-II-01
Ans: D
… Read $\begin{array}{cl}
& \alpha^2-\alpha-\beta
2022-II-02
Ans: B
… Read $\begin{array}{cl}
& \dfrac{81^{2n+3}}{(27
2022-II-03
Ans: A
… Read $\begin{array}{rcl}
(x+3)^2+mx & \equiv
2022-II-04
Ans: D
… Read $\begin{array}{rcl}
(x-c)(x-4c) & = & (3
2022-II-05
Ans: A
… Read $\begin{array}{rcl}
\dfrac{2}{u} + \dfrac{3}{v} &
2022-II-06
Ans: B
… Read Note that the rounding method is rounding down. That m
2022-II-07
Ans: A
… Read $\left\{ \begin{array}{ll}
3y-5 < 5y +1 & \ldots \unicode{x2460} \\
5y +1 \le 11 & \ldots \unicode{x2461}
\end{array}\right.$
From $\unicode{x2
2022-II-08
Ans: B
… Read A may not be true. Note that $f(k) = k^2 -k +1$.
$\begin{
2022-II-09
Ans: D
… Read Since $g(x)$ is divisible by $x+2a$, we have
$\begin{
2022-II-10
Ans: A
… Read I is true. Rewrite the function of the graph into gener
2022-II-11
Ans: C
… Read The required interest
$\begin{array}{cl}
= & 8
2022-II-12
Ans: C
… Read Since $x:y=8:5$, then let $x=8k$ and $y=5k$, where $k