I gave my Secondary 4 students 1 revision question per week. The recent one I marked was on the topic of Logarithms (the fresh-killer topic for many Secondary 3).
Did you spot the error? (It's a give-away if you observe clearly)
Do this question and share your answer(s) in the comment section.
I look forward in hearing from you.
Ai Ling Ong
Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)
there is a wrong calculation in divition of logarithm
(log2(base2)8)divide by(log2(base2)x)
is not equal to (log2(base2)8/x)
(log2(base2)8)-(log2(base2)x)=log2(base2)8/x)
Let log2 x be y.
2y = 3(log2 2 over log2 x) + 1
2y - 1 = 3 ( 1 over y )
2y^2 - y = 3
2y^2 - y - 3 = 0
( 2y - 3 )( y + 1 ) = 0
2y = 3 , y = -1
y = 3/2
If there is a faster method, i would like to know ;)
1have benefited a lot
benefited
Hi where is this tuition centre being held? i just wanna find out whether its very far from my house:)