O-Level Additional Math

[Guan Hui]

HI oklor=D

Heres Your solution=)
http://www.postimage.org/image.php?v=gxHyAlJ

[OK Lor]

Guan Hui:

HI oklor=D

Heres Your solution=)
http://www.postimage.org/image.php?v=gxHyAlJ

Hi Guan Hui,
Thanks. The original question was:
Solve the simultaneous equation 64(4^y) = 16^x and 3^y = 4[3^(x-2)] - 1.

[Guan Hui]

Bonjour Oklor,

Heres the solution=)
http://www.postimage.org/image.php?v=TsFjbFS

http://www.postimage.org/image.php?v=PqhA1ci

http://www.postimage.org/image.php?v=gxJs6K0

http://www.postimage.org/image.php?v=TsFm7fr

http://www.postimage.org/image.php?v=gxJsyaA

[OK Lor]

Hi Sir,


Thanks.

[Guan Hui]

np=) good luck in your exams

[suiyuan]

Hi Teacher Guan Hui


Please help.

1)Mrs Lee has 2 daughters,Alice and Judy.The highest common factor and lowest common multiple of their ages are 3 and 168 respectively.If Alice is 3 years older than her sister, find her age.

2)The HCF and LCM of 270 and A are 18 and 5940 respectively. What is the value of A?

Thank you

[Guan Hui]

here you go

http://www.postimage.org/image.php?v=PqhY3g0

http://www.postimage.org/image.php?v=PqhYaKr

[OK Lor]

Hi Sir,


The number of arrangement of the word BOOKS if both O are to be placed together.

Answer is 4!2! or 4!?

Thanks.

[Guan Hui]

4!2!=)

[OK Lor]

Hi Sir,


Thanks. You mean there are two arrangements of OO? shouldn't it be 2!/2!=1? since there are identical, confuse. How about the number of arrangements of AABB? 4!/(2!2!) or 4!?

Thanks.