O-Level Elementary 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 Elementary Math

Post by KSP2013777 » Sat Apr 30, 2016 10:06 pm

Thank you very much, Future Academy. Your working is very clear.

Future Academy
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Re: O-Level Elementary Math

Post by Future Academy » Sat Apr 30, 2016 11:08 pm

KSP2013777 wrote:Thank you very much, Future Academy. Your working is very clear.


You are welcome!

This question is not very straight forward. It is considered as a challenging E Math question.

Please be reminded that step-by-step working is expected if you want to score full marks (including all method marks) for it.

Cheers!

:rahrah: :rahrah:

questionable_i
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Re: O-Level Elementary Math

Post by questionable_i » Sun May 08, 2016 12:58 pm

Can anyone help me with this question Q1)(c)(ii), I need it urgently. Thank you in advance.
http://oi67.tinypic.com/j8fq5y.jpg

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Re: O-Level Elementary Math

Post by Future Academy » Sun May 08, 2016 1:55 pm

questionable_i wrote:Can anyone help me with this question Q1)(c)(ii), I need it urgently. Thank you in advance.
http://oi67.tinypic.com/j8fq5y.jpg



Image

Please let us know if you need further explanation, our team of ex IP school/RGS/NYGH teachers are here to support.

questionable_i
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Re: O-Level Elementary Math

Post by questionable_i » Thu Jun 09, 2016 5:19 pm

Can anyone help me to convert 12m/s^2 to m/s with working. Thank you


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Re: O-Level Elementary Math

Post by Future Academy » Wed Jun 22, 2016 1:33 pm

questionable_i wrote:Can anyone help me to convert 12m/s^2 to m/s with working. Thank you

Hi,

12 m/s^2 and m/s have different units. Cannot do conversion directly.

Maybe you can provide more information in the question?

Cheers

boinbi
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Re: O-Level Elementary Math

Post by boinbi » Tue Oct 11, 2016 11:17 pm

Hi, can anyone please help me with this question. Thanks

Image

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Re: O-Level Elementary Math

Post by boinbi » Wed Oct 12, 2016 10:55 am

The answer is x+y=1. But I don't know how to get the answer.

Jeffrey Goh
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Re: O-Level Elementary Math

Post by Jeffrey Goh » Fri Oct 21, 2016 2:08 am

boinbi wrote:The answer is x+y=1. But I don't know how to get the answer.

Since the equation has EVEN power index, therefore, it is always positive.

In order to have the sum of (x+4)^50 + (y-5)^100 = 0,
Therefore,
(x+4)^50 = 0 and (y-5)^100 = 0
Hence,
x = -4 and y = 5

Therefore x + y = 1.

Done by Jeffrey Goh on 21st Oct 2016. Hp: 9636-4921

Cheers.

boinbi
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Re: O-Level Elementary Math

Post by boinbi » Fri Oct 21, 2016 12:46 pm

Thank you so much for your reply

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