O-Level Additional Math

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Re: O-Level Additional Math

Postby PiggyLalala » Sun Jun 05, 2016 10:29 am

questionable_i wrote:Can anyone help me with this question? Thank you.

1) By expressing each of the following equations in the form a^x=b where a and b are real numbers, take logarithms to solve for x.

(a) 2^(x+1)=3^x

(b) Image



Image

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Re: O-Level Additional Math

Postby KSP2013777 » Wed Jun 22, 2016 10:29 am

Can somebody pls help me with this question?
Image
Tks

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Re: O-Level Additional Math

Postby Eddow » Wed Jun 22, 2016 11:45 am

KSP2013777 wrote:Can somebody pls help me with this question?
Image
Tks


I suspect Qn printed wrongly. RHS should be (1- tan x) /(1 + tanx).

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Re: O-Level Additional Math

Postby Future Academy » Wed Jun 22, 2016 12:44 pm

KSP2013777 wrote:Can somebody pls help me with this question?
Image
Tks


Image

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Re: O-Level Additional Math

Postby Future Academy » Wed Jun 22, 2016 12:49 pm

Here are the skills involved:

1) change sec x to 1/cosx ,
2) change (cosx)^2 - 1 to -(sinx)^2
3) factorise (sinx)^2+(cosx)^2+2sinxcosx to (sinx+cosx)^2.
4) apply tanx = sinx / cosx

Cheers!

Our team in Future Academy, who are of ex-teachers from top schools (e.g. RGS, NYGH, ACJC), are here to support you!

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Re: O-Level Additional Math

Postby KSP2013777 » Wed Jun 22, 2016 1:32 pm

Thanks so much, Future Academy

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Re: O-Level Additional Math

Postby questionable_i » Thu Jun 23, 2016 3:50 pm

Can anyone help me with these questions?
1. Given that the first three terms in the expansion of Image are Image, find the value of n and p.

2. The first three terms in the expansion of Image are Image, where k and n are constants. Determine the values of k and n.

3. The coefficient of Image in the expansion of Image is 15. Find the value of k, where k>0.

:thankyou:

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Re: O-Level Additional Math

Postby itsy » Tue Jun 28, 2016 12:44 pm

Hi,
I'm not sure if this is an appropriate thread to post this question, mod please remove if it is not appropriate.

My son is struggling with his A Maths. His A Maths grade for SA1 is 12.5. I am considering letting him drop the subject. My question is - how important is A Maths for entrance to JC Science stream?

He is also weak in his E Maths, 42.5 for SA1. I'm thinking if he drops A Maths, he can spend more time to improve on his E Maths and other subjects. Any advice or thoughts will be greatly appreciated.

TIA.

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Re: O-Level Additional Math

Postby passioninlearning » Tue Jun 28, 2016 4:29 pm

itsy wrote:Hi,
I'm not sure if this is an appropriate thread to post this question, mod please remove if it is not appropriate.

My son is struggling with his A Maths. His A Maths grade for SA1 is 12.5. I am considering letting him drop the subject. My question is - how important is A Maths for entrance to JC Science stream?

He is also weak in his E Maths, 42.5 for SA1. I'm thinking if he drops A Maths, he can spend more time to improve on his E Maths and other subjects. Any advice or thoughts will be greatly appreciated.

TIA.


Is your son in Sec 3 or 4?
If it's Sec 3, then there is still time to turn the tide.

In terms of dropping Maths, my view is that Maths remain the easiest subject to score well. Even if a student is not blessed with innate ability to 'master' Maths, he can still do reasonably well with diligence and practice.

Feel free to contact me if you need any help or advice.



Regards,
Eric
passioninlearning.wordpress.com

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Re: O-Level Additional Math

Postby iwork » Tue Jun 28, 2016 4:48 pm

I had a Sec 4 student (few years back), wanted to drop A Maths in O-Level. Well, his mother only engage me around March after he failed both his maths.

I encouraged him to continue with his A Maths, as some of the topics in E Maths will appear in A Maths with more details.

Ended up he got a A2 in E Math and B4 in A Math.

Well, if he is in Sec 3, then there are still time for him to catch up.

Make the decision only when the teacher advised him to drop the subject.

itsy wrote:Hi,
I'm not sure if this is an appropriate thread to post this question, mod please remove if it is not appropriate.

My son is struggling with his A Maths. His A Maths grade for SA1 is 12.5. I am considering letting him drop the subject. My question is - how important is A Maths for entrance to JC Science stream?

He is also weak in his E Maths, 42.5 for SA1. I'm thinking if he drops A Maths, he can spend more time to improve on his E Maths and other subjects. Any advice or thoughts will be greatly appreciated.

TIA.

iwork
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