2009-II-41
Ans: A
Let $f(x) = x^{2009} + x^{2008} + \cdots + x$. Hence, th
… Read Let $f(x) = x^{2009} + x^{2008} + \cdots + x$. Hence, th
HKCEE - 2009 - Paper 2
2009-II-42
Ans: B
Let $S(n) = n^2 + 2n$. Then the 5th term of the sequence
… Read Let $S(n) = n^2 + 2n$. Then the 5th term of the sequence
$
2009-II-43
Ans: A
Let $r$ be the common ratio of the geometric sequence.
… Read Let $r$ be the common ratio of the geometric sequence.
2009-II-44
Ans: A
Consider $y=x-9$. Note that the slope is $1$, which is
… Read Consider $y=x-9$. Note that the slope is $1$, which is
2009-II-45
Ans: B
$\begin{array}{rcl}
\cos^2 x – \sin^2 x &
… Read $\begin{array}{rcl}
\cos^2 x – \sin^2 x &
2009-II-46
Ans: C
Consider $y=a\sin(x^\circ + \theta)$.
… Read Consider $y=a\sin(x^\circ + \theta)$.
For $a1$, $y=
2009-II-47
Ans: B
… Read Let $N$ be the mid-point of $HG$. Then the angle betwee
2009-II-48
Ans: B
… Read Join $AD$. Since $AB$ is a diameter of the circle $ABCD
2009-II-49
Ans: C
Let $\angle CBD = x$. Since $A$, $B$, $C$ and $D$ are fou
… Read Let $\angle CBD = x$. Since $A$, $B$, $C$ and $D$ are fou
2009-II-50
Ans: C
… Read Denote $O$ the centre of the circle. Add a perpendicul
2009-II-51
Ans: B
Since $G$ is the centroid of $\Delta ABC$, then $BL = LC
… Read Since $G$ is the centroid of $\Delta ABC$, then $BL = LC
2009-II-52
Ans: D
Note that the three perpendicular bisectors of the th
… Read Note that the three perpendicular bisectors of the th
2009-II-53
Ans: C
… Read Denote $C$ the centre of the circle. Let $D$ and $E$ be t
2009-II-54
Ans: A
A is true. The percentage increase of the annual reven
… Read A is true. The percentage increase of the annual reven