2010-II-41
Ans: A
Let $f(x)=x^3+5x^2+3kx-k$. Since $f(x)$ is divisib
… Read Let $f(x)=x^3+5x^2+3kx-k$. Since $f(x)$ is divisib
HKCEE - 2010 - Paper 2
2010-II-42
Ans: C
Consider the coordinates of $A$. Sub. $x=0$ into $x+3
… Read Consider the coordinates of $A$. Sub. $x=0$ into $x+3
2010-II-43
Ans: B
Since $h$, $5$ and $k$ form an arithmetic sequence, th
… Read Since $h$, $5$ and $k$ form an arithmetic sequence, th
2010-II-44
Ans: C
Let $a$ and $r$ be the first term and the common ratio of
… Read Let $a$ and $r$ be the first term and the common ratio of
2010-II-45
Ans: B
… Read By comparing the graph of $y=\cos x^\circ$, the graph
2010-II-46
Ans: B
$\begin{array}{cl}
& \cos^2 1^\circ + \cos^2 2
… Read $\begin{array}{cl}
& \cos^2 1^\circ + \cos^2 2
2010-II-47
Ans: D
Let $AB=BC=AC=2x$. Since $AB=BC=AC$, then $\Delta A
… Read Let $AB=BC=AC=2x$. Since $AB=BC=AC$, then $\Delta A
2010-II-48
Ans: D
… Read Join $NC$. Let $2x$ be the length of the cube, then $MB=
2010-II-49
Ans: B
Denote $O$ the centre of the circle $ABCD$ and $Z$ the m
… Read Denote $O$ the centre of the circle $ABCD$ and $Z$ the m
2010-II-50
Ans: C
Since $XY$ and $XZ$ are the tangents to the circle $ABC
… Read Since $XY$ and $XZ$ are the tangents to the circle $ABC
2010-II-51
Ans: A
Consider the coordinates of $A$. Sub. $y=0$ in the equ
… Read Consider the coordinates of $A$. Sub. $y=0$ in the equ
2010-II-52
Ans: D
… Read Denote $A$ the centre of the required circle and $N$ th
2010-II-53
Ans: A
The required probability
… Read The required probability
$\begin{array}{cl}
=
2010-II-54
Ans: B
A may be false. It is because we do not know the actual am
… Read A may be false. It is because we do not know the actual am