O-Level Additional Math

PSLE marks the graduation of Primary school students and their entry into Secondary schools as teenagers. Discuss all issues about Secondary schooling here.
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KSP2013777
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Re: O-Level Additional Math

Post by KSP2013777 » Thu Aug 13, 2015 9:22 pm

Thank you very much, jieheng.

KSP2013777
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Re: O-Level Additional Math

Post by KSP2013777 » Fri Aug 14, 2015 2:00 pm

How to do (ii) ? I can do the first part but second part I got different answer.

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TIA

jieheng
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Re: O-Level Additional Math

Post by jieheng » Sat Aug 15, 2015 7:02 pm

KSP2013777 wrote:How to do (ii) ? I can do the first part but second part I got different answer.

Image

TIA
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Last edited by jieheng on Sun Aug 16, 2015 12:09 am, edited 1 time in total.

KSP2013777
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Re: O-Level Additional Math

Post by KSP2013777 » Sat Aug 15, 2015 10:55 pm

Hi jieheng,
Ans key for max height 2.9m, min height 0.3m
For part (ii) ans key is 02:51, 07:39, 14:51, 19:39
Maybe ans key is wrong.? Pls help. Tks

jieheng
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Re: O-Level Additional Math

Post by jieheng » Sun Aug 16, 2015 12:10 am

KSP2013777 wrote:Hi jieheng,
Ans key for max height 2.9m, min height 0.3m
For part (ii) ans key is 02:51, 07:39, 14:51, 19:39
Maybe ans key is wrong.? Pls help. Tks
Hi ,

Answer key is correct.


KSP2013777
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Re: O-Level Additional Math

Post by KSP2013777 » Wed Aug 26, 2015 10:37 pm

Hi. Can somebody please help me with these 2 questions. ?

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Thank you.

KSP2013777
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Re: O-Level Additional Math

Post by KSP2013777 » Mon Aug 31, 2015 10:39 pm

Pls help me with this question. I can do (i) but can't do (ii). Pls help.

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Thank you.

shurley197323
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Re: O-Level Additional Math

Post by shurley197323 » Mon Sep 07, 2015 1:55 pm

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Can someone help question 3(ii) please.

Thank you.

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Re: O-Level Additional Math

Post by shurley197323 » Mon Sep 07, 2015 2:03 pm

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Can someone help question 5.

Thank you.

KSP2013777
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Re: O-Level Additional Math

Post by KSP2013777 » Thu Sep 10, 2015 6:43 am

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When I substitute, I get
2000=A ln (2k+ 1)
4000= A ln (5k +1)

But, I don't know how to solve this type of simultaneous equations. Somebody, Pls help me. Tks.

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