2006-II-04
Ans: A
$\begin{array}{cl}
& pr+qr -ps-qs \\
= & r
… Read $\begin{array}{cl}
& pr+qr -ps-qs \\
= & r
HKCEE - 2006
2006-II-05
Ans: A
$\begin{array}{rcl}
f(3)f(\dfrac{1}{3}) & =
… Read $\begin{array}{rcl}
f(3)f(\dfrac{1}{3}) & =
2006-II-06
Ans: B
I is not an identity. For $x=1$,
… Read I is not an identity. For $x=1$,
$\begin{array}{rcl}
2006-II-07
Ans: A
Note that the two $x$-intercepts of the graph $y=f(x)
… Read Note that the two $x$-intercepts of the graph $y=f(x)
2006-II-08
Ans: D
$\begin{array}{rcl}
3x^2 & = & 21x \\
x^2 &
… Read $\begin{array}{rcl}
3x^2 & = & 21x \\
x^2 &
2006-II-09
Ans: A
$\begin{array}{rcl}
x^2 +2x – k & = &
… Read $\begin{array}{rcl}
x^2 +2x – k & = &
2006-II-10
Ans: B
Let $\$x$ be the cost of the car. Then the marked price o
… Read Let $\$x$ be the cost of the car. Then the marked price o
2006-II-11
Ans: C
The required interest
… Read The required interest
$\begin{array}{cl}
= & 1
2006-II-12
Ans: C
Note that $T(n+1) = T(n) + (2n+3)$ for $n \ge 1$. Hence,
… Read Note that $T(n+1) = T(n) + (2n+3)$ for $n \ge 1$. Hence,
2006-II-13
Ans: D
$\begin{array}{ccccccccccc}
x & : & y �
… Read $\begin{array}{ccccccccccc}
x & : & y �
2006-II-14
Ans: D
Let $x = \dfrac{ky}{z^2}$, where $k$ is a constant.
… Read Let $x = \dfrac{ky}{z^2}$, where $k$ is a constant.
Le
2006-II-15
Ans: C
The length in the map $:$ the actual length
… Read The length in the map $:$ the actual length
$\begin{ar
2006-II-16
Ans: A
… Read Since the bearing of $Q$ from $A$ is $\text{S}28^\cir
2006-II-17
Ans: A
By applying the Pythagoras Theorem to $\Delta ACD$, w
… Read By applying the Pythagoras Theorem to $\Delta ACD$, w
2006-II-18
Ans: B
The volume of the solid
… Read The volume of the solid
$\begin{array}{cl}
= & \
2006-II-19
Ans: C
… Read Join $OB$. Since $OC$ and $OB$ are radii, then $OB = 2\t
2006-II-20
Ans: A
The area of the sector $OXY$
… Read The area of the sector $OXY$
$\begin{array}{cl}
= �
2006-II-21
Ans: D
$\begin{array}{cl}
& 2\sin(90^\circ –
… Read $\begin{array}{cl}
& 2\sin(90^\circ –
2006-II-22
Ans: D
I may be false. For $\theta= 40^\circ$, $\tan 40^\cir
… Read I may be false. For $\theta= 40^\circ$, $\tan 40^\cir
2006-II-23
Ans: C
Add a straight line from the upper base to the lower bas
… Read Add a straight line from the upper base to the lower bas