1972-03-14 — Page 25

REFERENCE

14 MAR 1972

TY HALL 育教頁一第張士第 日九十月正年子壬屣夏 WAH KID

AT PO

報日僑華

(5) 108

1972英文中學會考試題預習專欄

{6}

108 N 108

整道英文酉院主編

(7) Logarithm to base 10 is called com

1972英文中學會考試題預習專欄

mon logarithm and "10" is usually

英文科 (二十)

Comitted.

English Language (20)

堅道英文書院主編

Example (1)

數學科

(二十)

Simplify 2log(2)

210g(3)

g108(49)

Choose the right answer to each of the following questions

Solution: The expression

Mathematica

(Lesson 20)

(1), Azuner the teacher or the students

to stay behind,

108(-) + 108(32)

198(49)*

B. were

Solution to exercise 19

108(32 x 19 x

C. can be

D. Will b

二期星日四十月三年二七九一曆公年一十六國民華中

sufficient preparation

nor should it be not started with- out sufficient preparation

(10) Mary 18 not ugiy,

Po nor does Luoy

2. nor is Lucy

a. nor will Lucy

S, nor Luoy 19,

T. nor Lucy does

(11) He boasted to

to us that he would MLD the game easily. It turned out

that he was an also ran, The phrase underlined meangi.

·A+

the first

B.

the second

(2)

3.+2

5+

12(√√2 +

Example (2)

- √2 + √8 +1

Without using table, show that

(108402)(2108,5

(3)

Solution

(1082)(2108 5+

·108102 (108,02) (2

108104

(108, 2) (108,052 +108,04)

1081022

108,02

108,100

108010

__[(1 +12) + √3][(1 +R>5}

(1 +√2)2 - (3)

2√2

21+/2

J2 2

√2 (1 + 2 − 3 ) −.2 + 2

-1/24/3b-

-1/24/3

5/2 23

-7/3"

8-5/3

Example (3)

then log.

2ab7ab + Záb

9ab

log(9ab

1089 + loga

2 108(a

2 log(a + b)

2 10g3+loga + logo

10g3 (loga

log(a + b) - log3 • +(loga + logo j

★(loga + logb.,

Simultaneous equations

-1/2 4/3

-7/3

~-1/2-1-5/2-164/3-5/2-3+1/3

Example (4)

Solve the septem of equation

(4)

~ (9/2-3/2) = (-7/31/3 j✯

C

ax + by

Solution (1) xb' (2)xb

-(2)

3. may be

e may be

“May I remind you that I do not

agree to this, and all your friends)

won't agree to this,

A. either.

B. or

C. neither

D. nor

E. too

Our answer is not correot and his- answer is not correct.

also

Be Well

tod

D. either

E; neither

(4) It gives no help

you and it gives

no help to me

A. alec

3. as welL

C. too

D. eithe

Eneither

(5) He did not think that the enemy:

would start the attack- to-night;

o do I

B. and I didn't

C. nor did I

D. neither. I did

E, either did I

(6) He thought that his father wouldn't

come to see him,

or his mother

Q. nor did his mother

R, neither his mother would

S, neither did his mother

T. nor would his mother

Susan.

told us that she could not

helg screaming when she saw the monster,

nor couldn't her aieter

Q. or her siëter did

R. nor did her sister

S. nor could her sister

T

neither her sister could.

8) He tells his teacher that his father

will not be able to come,

P. neither does his mother

2. nor will his mother

R. nor won't his mother

5. nor doesn't his mother

T. neither be able his mother

It should not be done withou good planned system

P. nor it should be started without

sufficient preparation

Q. nor should it not be started wiTN-

out sufficient preparation

nor it should not be started with- out sufficient preparation nor should it be started without

Tab

If ab

then I

atb

Assuming

(ab

Example (6)

19.10,

C. the third-

D. disqualifica

E. not among the first "thres

(12) Do run........., and see me this

noon.

B, out C."

D. to

E. over

(13) The meeting will begin at 2 0'0look to the minute. It means that meet-

ing is going to starti

at a minute past

10 minutes before

one minute befors

exactly at after

(14) me coming of the Princs to our

little humble village raised dunt. It means that

* means the

A. the prince came by horse

the prince came by carriage the visit of the prince caused much excitement.

D. the visit of the princs aroused.

spread of rumour the visit of the much confusion »

prinos caused

(15) Do you think that the poliosman can.

rida

the fugitive?:

B. against

C. over

Do down

through

E.

(16) We hoped that they could come safel;

through the storm. We hoped they could ride

up

Qin

R. on

Sout

T. against

(17) 'I felt out of my element wher

people began talking about polit ice. It means that I felt

annoyed

Q. happy

R. I had something to speak on this 5. not in a suitable situation T that I was expert in this.

(18) Don't throw away these books.

They may come in handy some time. The sentence means that the booka

P. may become valuable some time R. may be useful some time.

R may be used for cleaning hana S. can be used for some more time T. may be, revised soon,

When y

3(− 2-) +

1

Logarithm

If a number N can be expressed in)

the form: a"

then a is oalled the logarithm of N to the base a. Our notation is

If a 18 a non-negative number and 1 then is always positive for all m. Hence it is meaningless to ea the log. of a negative number or log. of zero,

The following are the main proper- ties of logarithmi

for any non-g

Then

Example (5)

a is a constant, solve the following

Syaten

Balution: (1) + (2)

ay

3x3

Solutions From (1)

-(2)

(3)

(1)

Exercise 20

-(2)

Subst. (3) into (2)

-(3)

1) Solve

+38 -

y

136x + x + =) - 7

(4)

(37 + 1)2 - 3(38

assuming a + 2 ƒ0

(2) Bolve

1)

・(2) 108 2

4 + 6y - 6.

(4)

10x

(3) Log (MN)

(4) 108,

(3-(4)

2y2 - 35 - 9 - 0 (y-3)(2y + 3)

(3) Solve

(4) Simplify!

(1086

[1083] 10g?)

(10g/6) - 1083

•11083

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