• 沒有找到結果。

Learning Content of Module 1 (Calculus and Statistics) Notes:

1. Learning units are grouped under three areas (“Foundation Knowledge”, “Calculus” and “Statistics”) and a Further Learning Unit.

2. Related learning objectives are grouped under the same learning unit.

3. The notes in the “Remarks” column of the table may be considered as supplementary information about the learning objectives.

4. To aid teachers in judging how far to take a given topic, a suggested lesson time in hours is given against each learning unit. However, the lesson time assigned is for their reference only. Teachers may adjust the lesson time to meet their individual needs.

Learning Unit Learning Objective Time Remarks

Foundation Knowledge

1. Binomial expansion 1.1 recognise the expansion of (ab)n , where n is a positive integer

3 Students are required to recognise the summation notation ().

The following contents are not required:

 expansion of trinomials

 the greatest coefficient, the greatest term and the properties of binomial coefficients

applications to numerical approximation

4646

Learning Unit Learning Objective Time Remarks

2. Exponential and logarithmic functions

2.1 recognise the definition of e and the exponential series

2 3

1 2! 3!

x x x

e   x  

8

2.2 understand exponential functions and logarithmic functions

The following functions are required:

yex

ylnx

2.3 use exponential functions and logarithmic functions to solve problems

Students are required to solve problems including those related to compound interest, population growth and radioactive decay.

2.4 transform ykax and yk f x

( )

n to linear relations, where a , n and k are real numbers,

0

a , a1, f x( )0 and f x( ) 1

When experimental values of x and y are given, students are required to plot the graph of the corresponding linear relation from which they can determine the values of the unknown constants by considering its slope and intercepts.

Subtotal in hours 11

4747

Learning Unit Learning Objective Time Remarks

Calculus

3. Derivative of a function

3.1 recognise the intuitive concept of the limit of a function

5 Student are required to recognise the theorems on the limits of sum, difference, product, quotient, scalar multiplication of functions and the limits of composite functions (the proofs are not required).

3.2 find the limits of algebraic functions, exponential functions and logarithmic functions

The following algebraic functions are required:

polynomial functions

rational functions

power functions x

functions derived from the above ones through addition, subtraction, multiplication, division and composition, such as x21

3.3 recognise the concept of the derivative of a function from first principles

Students are not required to find the derivatives of functions from first principles.

Students are required to recognise the notations: y,f x( ) and dy

dx .

4848

Learning Unit Learning Objective Time Remarks

3.4 recognise the slope of the tangent of the curve ( )

yf x at a point xx0

Students are required to recognise the notations: f x and '( )0

x x0

dy dx .

4. Differentiation of a function

4.1 understand the addition rule, product rule, quotient rule and chain rule of differentiation

8 The rules include:

d ( ) du dv u v

dx   dxdx

d ( ) du dv

uv v u

dxdxdx

 ( ) 2

du dv

v u

d u dx dx

dx v v

 

dy dy du dxdu dx

4949

Learning Unit Learning Objective Time Remarks

4.2 find the derivatives of algebraic functions, exponential functions and logarithmic functions

The formulae that students are required to use include:

 ( )C  0

 (xn) nxn1

 ( )ex  ex

 1

ln ) ( x

  x

 (log ) 1

ax ln

x a

 

 (ax) axlna

Implicit differentiation and logarithmic differentiation are not required.

5. Second derivative 5.1 recognise the concept of the second derivative of a function

2 Students are required to recognise the notations: y, f( )x and

2 2

d y dx .

Third and higher order derivatives are not required.

5050

Learning Unit Learning Objective Time Remarks

5.2 find the second derivative of an explicit function Students are required to recognise the second derivative test and concavity.

6. Applications of differentiation

6.1 use differentiation to solve problems involving tangent, rate of change, maximum and minimum

10 Local and global extrema are required.

7. Indefinite integration and its applications

7.1 recognise the concept of indefinite integration 10 Indefinite integration as the reverse process of differentiation should be introduced.

7.2 understand the basic properties of indefinite integrals and basic integration formulae

Students are required to recognise the notation:

f x dx( ) .

The properties include:

kf x dx( ) k f x dx

( )

 

f x( )g x dx( )

( ) ( )

f x dx g x dx

The formulae include:

kdxkxC

1

1

n

n x

x dx C

n

5151

Learning Unit Learning Objective Time Remarks

1

ln x xdx C

e dxxexC

Students are required to understand the meaning of the constant of integration C.

7.3 use basic integration formulae to find the indefinite integrals of algebraic functions and exponential functions

7.4 use integration by substitution to find indefinite integrals

Integration by parts is not required.

7.5 use indefinite integration to solve problems 8. Definite integration

and its applications

8.1 recognise the concept of definite integration 12 The definition of the definite integral as the limit of a sum of the areas of rectangles under a curve should be introduced.

Students are required to recognise the notation: b ( )

a f x dx

.

The concept of dummy variables is required, for example: b ( ) b ( )

a f x dxa f t dt

 

.

5252

Learning Unit Learning Objective Time Remarks

8.2 recognise the Fundamental Theorem of Calculus and understand the properties of definite integrals

The Fundamental Theorem of Calculus that students are required to recognise is:

( ) ( ) ( )

b

a f x dxF bF a

, where

( ) ( ) d F x f x

dx  .

The properties include:

b ( ) a ( )

a f x dx  b f x dx

 

a ( ) 0

a f x dx

b ( ) c ( ) b ( )

a f x dxa f x dxc f x dx

  

b ( ) b ( )

akf x dxk a f x dx

 

b

( ) ( )

a f xg x dx

( ) ( )

b b

a f x dx a g x dx

8.3 find the definite integrals of algebraic functions and exponential functions

8.4 use integration by substitution to find definite integrals

5353

Learning Unit Learning Objective Time Remarks

8.5 use definite integration to find the areas of plane figures

Students are not required to use definite integration to find the area between a curve and the y-axis and the area between two curves.

8.6 use definite integration to solve problems 9. Approximation of

definite integrals using the trapezoidal rule

9.1 understand the trapezoidal rule and use it to estimate the values of definite integrals

4 Error estimation is not required.

Students are required to determine whether an estimate is an over-estimate or under-estimate by using the second derivative and concavity.

Subtotal in hours 51 Statistics

10. Conditional

probability and Bayes’

theorem

10.1 understand the concept of conditional probability 6 10.2 use Bayes’ theorem to solve simple problems

11. Discrete random variables

11.1 recognise the concept of discrete random variables 1

5454

Learning Unit Learning Objective Time Remarks

12. Probability distribution, expectation and variance

12.1 recognise the concept of discrete probability distribution and represent the distribution in the form of tables, graphs and mathematical formulae

7

12.2 recognise the concepts of expectation E X

 

and variance Var( )X and use them to solve simple problems

The formulae that students are required to use include:

E X

 

xP X(  x)

 Var( )XE(X )2

E g X

( )

g x P X( ) ( x)

E aX

b

aE X

 

b

Var( )X E X 2(E X

 

)2

 Var(aXb)a2Var( )X Notation E X

 

can also be used.

5555

Learning Unit Learning Objective Time Remarks

13. The binomial distribution

13.1 recognise the concept and properties of the binomial distribution

5 The Bernoulli distribution should be introduced.

The mean and variance of the binomial distribution are required (the proofs are not required).

13.2 calculate probabilities involving the binomial distribution

Use of the binomial distribution table is not required.

14. The Poisson distribution

14.1 recognise the concept and properties of the Poisson distribution

5 The mean and variance of Poisson distribution are required (the proofs are not required).

14.2 calculate probabilities involving the Poisson distribution

Use of the Poisson distribution table is not required.

15. Applications of the binomial and the Poisson distributions

15.1 use the binomial and the Poisson distributions to solve problems

5

16. Basic definition and properties of the normal distribution

16.1 recognise the concepts of continuous random variables and continuous probability distributions, with reference to the normal distribution

3 Derivations of the mean and variance of the normal distribution are not required.

Students are required to recognise that the formulae in Learning Objective 12.2 are also applicable to continuous random variables.

5656

Learning Unit Learning Objective Time Remarks

16.2 recognise the concept and properties of the normal distribution

The properties include:

the curve is bell-shaped and symmetrical about the mean

the mean, mode and median are all equal

the flatness can be determined by the value of 

the area under the curve is 1 17. Standardisation of a

normal variable and use of the standard normal table

17.1 standardise a normal variable and use the standard normal table to find probabilities involving the normal distribution

2

18. Applications of the normal distribution

18.1 find the values of P X( x1) , P X( x2) ,

1 2

( )

P xXx and related probabilities, given the values of x1 , x2 ,  and  , where

~ ( , 2) X N  

7

18.2 find the values of x, given the values of P X( x),

( )

P Xx , P a( Xx) , P x(  Xb) or a related probability, where X ~N( , 2)

18.3 use the normal distribution to solve problems

5757

Learning Unit Learning Objective Time Remarks

19. Sampling distribution and point estimates

19.1 recognise the concepts of sample statistics and population parameters

9 Students are required to recognise:

If the population mean is  and the population size is N, then the population variance is

2

2 1

( )

N i i

x N

. 19.2 recognise the sampling distribution of the sample

mean X from a random sample of size n

Students are required to recognise:

 If the population mean is  and the population variance is 2 , then

E X   and

2

Var(X) n

 .

 IfX ~N( , 2), then

2

~ ( , ) X N

n

  (the proof is not required).

19.3 use the Central Limit Theorem to treat X as being normally distributed when the sample size n is sufficiently large

5858

Learning Unit Learning Objective Time Remarks

19.4 recognise the concept of point estimates including the sample mean and sample variance

Students are required to recognise:

If the sample mean is x and the sample size is n, then the sample variance is

2

2 1

( )

1

n i i

x x

s n

 

.

Students are required to recognise the concept of unbiased estimator.

20. Confidence interval for a population mean

20.1 recognise the concept of confidence interval 6

20.2 find the confidence interval for a population mean Students are required to recognise:

 A 100(1)% confidence interval for the mean  of a normal population with known variance2, based on a random sample of size n, is given by

2 2

(x z ,x z )

n n

 

  .

When the sample size n is sufficiently large, a 100(1)% confidence interval for the mean  of a population with unknown variance is given by

2 2

( s , s )

x z x z

n n

  , where s is the

5959

Learning Unit Learning Objective Time Remarks

sample standard deviation.

Subtotal in hours 56 Further Learning Unit

21. Inquiry and investigation

Through various learning activities, discover and construct knowledge, further improve the ability to inquire, communicate, reason and conceptualise mathematical concepts

7 This is not an independent and isolated learning unit. The time is allocated for students to engage in learning activities from different learning units.

Subtotal in hours 7