2021-M2-01
Ans: $f'(x) = \dfrac{-6x}{(3x^2+4)^2}$
… Read $\begin{array}{
HKDSE-M2 - 2021
2021-M2-02
Let $P(n)$ be the given statement.
… Read For $n=1$,
$\begin{arra
2021-M2-03
Ans: (a) $6$ (b) $106\ 240$
… Read - By the binomial theorem, we have
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2021-M2-04
Ans: (b) $\dfrac{\pi}{12}$ or $\dfrac{\pi}{8}$ or $\dfra
… Read 2021-M2-05
Ans: (a) $x=1$, $y=x+1$ (b) $\dfrac{d}{dx}r(x) = \dfrac{x
… Read 2021-M2-06
Ans: (a) $5$ (b) $\dfrac{e^4-3}{2}$
… Read This is out of syllabus
2021-M2-07
Ans: (a) $x(\ln x)^2 -2x \ln x +2x +C$ (b) $\pi[(\ln 2)^2-2\l
… Read 2021-M2-08
Ans: (a) $d=3$, $\{ (3-32t, 13t-1, t) | t \in \mathbb{R} \}$ (
… Read 2021-M2-09
Ans: (a) (i) $\sec \theta$ (ii) $\ln( \sec\theta +\tan \the
… Read 2021-M2-10
Ans: (a) $12$ (b) (i) No (ii) $42$ unit per minute
… Read Sketch a gra
2021-M2-11
Ans: (b) (i) $\dfrac{5\pi}{6}$ (iii) $\dfrac{-1}{2^{556
… Read 2021-M2-12
Ans: (a) (i) $s=10$, $t=-18$ (ii) $270$ (iii) $2160$ (iv) $2
… Read