## O-Level Additional Math

- KSP2013777
- OrangeBelt
**Posts:**92**Joined:**Fri Dec 28,

### Re: O-Level Additional Math

I suspect Qn printed wrongly. RHS should be (1- tan x) /(1 + tanx).KSP2013777 wrote:Can somebody pls help me with this question?

Tks

- Future Academy
- OrangeBelt
**Posts:**81**Joined:**Mon Aug 24,**Total Likes:**3

- Future Academy
- OrangeBelt
**Posts:**81**Joined:**Mon Aug 24,**Total Likes:**3

### Re: O-Level Additional Math

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!

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!

- KSP2013777
- OrangeBelt
**Posts:**92**Joined:**Fri Dec 28,

- questionable_i
- BrownBelt
**Posts:**535**Joined:**Sat Oct 10,**Total Likes:**1

### Re: O-Level Additional Math

Can anyone help me with these questions?

1. Given that the first three terms in the expansion of are , find the value of n and p.

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

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

1. Given that the first three terms in the expansion of are , find the value of n and p.

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

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

### Re: O-Level Additional Math

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.

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.

- passioninlearning
- KiasuGrandMaster
**Posts:**1070**Joined:**Mon Jun 06,**Total Likes:**2

### Re: O-Level Additional Math

Is your son in Sec 3 or 4?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.

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

### Re: O-Level Additional Math

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.

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.

- KSP2013777
- OrangeBelt
**Posts:**92**Joined:**Fri Dec 28,

### Re: O-Level Additional Math

Please help me find answer for this question.

Is it must make the 2 curves equal to each other? But, it is difficult to solve this equation. Pls help. Tks.

Is it must make the 2 curves equal to each other? But, it is difficult to solve this equation. Pls help. Tks.