additional mathematics (add maths) teh keng seng's textbook (exercise 1a)
TRANSCRIPT
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
1
Solutions to Exercise 1A (p. 3) Teh Keng Seng and Loh Cheng Yee’s New Syllabus
Additional Mathematics: 8th Edition (Textbook)
Question 1(a)
Rearranging equation (2):
Substituting equation (3) into equation (1):
Question 1(b)
Rearranging equation (2):
Dividing throughout by 5:
Substituting equation (3) into equation (1)
(
)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
2
Substituting (4) into (3):
Question 1(c)
Rearranging equation (2):
Substituting equation (3) into equation (1):
(
)
Question 1(d)
Rearranging (2):
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
3
Substituting (3) into (1):
(
)
(
)
Question 1(e)
Question 1(f)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
4
Substituting (1) into (2):
Substituting (3) into (1):
For question 1(g) and 1(h), let
, and
.
Question 1(g)
Rearranging (2):
Substituting (3) into (1):
(
)
Substitute (4) into (3):
(
)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
5
Question 1(h)
Rearranging:
Multiply throughout by 2:
Substituting (1) into (2):
Substitute (3) into (1):
(
)
Question 2
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
6
(
)
Question 3
Substitute (1) into (2):
Substitute (3) into (1):
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