1979-04-09 — Page 36

cos(-60+120) isin(-60+128)

cos (200-300)+isin(206-306

cos60+isinGe'

cas(-100)+isin(108)

霞四第張九第 日三十月三年未己夏

WAH·KIU YAT PO

報日橋

2at,

23

1979

中學會考試題預習專欄

gradient of

附加數品(廿六)

normal

明德出源社岑俊态提儺資料

Additional Mathematics (26)

the equation of the: normal at P(x,y):

(

n169 (Ans.)

)

Solutions to Exercise 13.

Za

(−t)(x-at2)

The (r+1)th term

to

Y -3y

withe respec

2x +(1)y + x-x - bydy – 0

Whe

(Ans)

Let

fcos xs

(cos xsin x(cosx dx)

S(1-sin2x)s

竖

Let

(Ana")

Let P be

Condition: PA

PB:

(y-4)

+(+1)

√(x-2)2

Squaring both sides,

x2+(y~4)2 = 4 [(x-2)2+(y+1)]

+y-8y+16 4(x2-4x+4+y2

+2y+1)

16x+163+4

0

Which is the required locus

(Ans.)

(x+1y)_ _ (x-iy)2

xbiy

-

(x-iy)) )(x+iy)

...

2(iv)+3x(iy)2+(iy),

【x3-3x2(iy)+31(19)2-(1y)}”]

2(iv)3

2(iy)

2y (3x2

龍運

2at

Let

mx

d(sinx)

((sin x-sin x)d(sinx)

sinx

cos [68~(~109)]

isin(60-(-108)]

cos168

(-1)" „24-5r

Cx

2,if 24-5r=-1 ⇒ r-5 the coefficient of

(-1)5 8C

8-7-6

(-1) 3-2-1

-56.. (ADS.)

經濟 (六)

明德出版社孔蟇璡盧榮俊古嘉利提供資料 Economics(26)

(Ans) A. Balance-of-Payments

ome of the roats he of then the other root is 306

Sum of roots

300

40€

·(1).

Product of roota

(x) (306)

7

From (1)

162 Substitute into (2):

162

16/0 (Ans

(cos26+fain20) 7:0

(cos48–181040)

(co830-isin30)

(cos59+isin56)

[cos(-60+1sin(~60)] (cos(-200)-1sin(–206)]

(cos(-120)-isin(-120)) (cos(-308)+isin(-300)]

(cos(−60)+isin(-60.)}]

cos200+isin2061

[cos120+isin128]

· [cos(−3,06)+isin(~300)]

專門搬屋永安飯

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A country's balance of international payments can affect the value of its currency and influence decisions of the government regarding exports, imports, and the flow of investment funds.

A country's balance-of - payments_statement summari- zes all international transac- tions by government, business, and private residents during a specified period of time, usually one year. It is a flow concept, reflecting changes in accounts, similar to an income statement and a flow-of-funds statement in accounting., As an illustration, the official-reser- ves section of the balance of payments would summarize an annual changes in amounts of reserve assets, such as: gold and covertible currencies.

The principle of balance -of-payments is based on double-entry accounting: each transaction is represented by an.increase or a decrease of units. When the total receipts are greater than the total payments, the country is described as having a favour- ble balance of payments, or 'payments surplus. However, if total payments are more than total receipts, the country will be suffering a payment deficit, ie. an unfavourable balance

7 4 2 10 6 5

日九月四年九七九一座公年八十六國民藔中育教僑齢

of payments, Of course, a

country with a payments surplus

will gain foreign exchange while a country with a. payments deficit will lose foreign exchange.

B. Current Account

The current account usually includes merchandise trade, services, and unilateral transfers、Merchansise trade includes the export and import of physical goods. On the other hand; services are often referred to as nonmerchandise transactions or invisibles.

Transfer payments or unilateral transfers represent. gifts or similar payments by domestic residents to foreign residents(private transfer),

or vice versa, The net of the three accounts-merchandise trade, services, and uni- lateral transfers --- represent the balance on current account.

Diversification

In recent years, Hong Kong exporters have faced many trade restriction problens. The European Economic Community has imposed quotas on textiles, which is the largest export industry in Hong Kong. In addition, neighbouring countries such as South Korea, Taiwan, Singapore, etc. are exporting. those items that ate competitive with Hong Kong products overseas, Thus, because of international restrictions on imported goods and keen competition, the Hong Kong: Government advices local: industries to diversify. The ultimate aim, of course, is to make Hong Kong less dependent on a few major markets and to decrease the chance of unemployment in this area

General speaking, diversification can serve the following purposes;

(1) better utilization of the firms' production facilities;

(2) increased economy in the existing sales organization;

(3) reduced dependence of a country or a firm on a single market, product or customer; (4)higher return on invest-

ment than could be obtained in its present area of activity,

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(5) safeguarding the future

growth of the company if its

present market does not permit adquate sales increases;

(6) avoiding strong competition. con its present market,

Here it is important to realize that diversifications can be brought about in. different forms:

(1) Diversification of markets

diversification of markets means an increase in : the number of markets served

by an individual firm, When the export industries of a country depend solely on one market or a few markets, then it will face probable threats whenever the importing. countries set up trade barriers such as tariffs or quotas.

(2) Diversification of industries

by diversifying indust- tries, this means the provision of greater variety of industry to an area, especially one

mainly dependent on a highly: localised industry. Its aim is to make employment less dependent on a particular industry so that serious employment will not occur if that industry declines. As our exports are usually labour- intensive, the increased

production cost(e, g. land, labour) has made our domestic exports less competitive with those of our neighbouring: countries: who have cheaper labour and land. Hence wei need to develop new lines of production which requires skills, technology, design, machinery, and management:

In order to work for the contiual growth and development of our exports, diversifications of industries and markets are necessary. Besides the industrialists themselves, the government can play a critical role in the diversification process such as through a relaxed land policy. A commit- tee has already been set up to.

study the details of diversifica- tion in Hong Kong. Only with the

co-ordinated efforts of both:

the government and the

industrialists will this process

can be carried out satisfactorily.

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