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Question

S3 Additional Mathematics

Question post on Wed, 08/02/2017 11:35pm

Thank you so much Acestarling….for your great help!

Jmaths.SG · Answer 1 · Post on Thu, 09/02/2017 9:24am

Jmaths.SG Post on Thu, 09/02/2017 9:24am

Can’t solve this. can double check if the question is correct?

TeaBoh · Answer 2 · Post on Thu, 09/02/2017 8:03pm

Hi Jmaths.SG

The question is correctly written. Anyway, I have managed to solve the question after morning breakfast. Thank you for your great help too.

Jmaths.SG · Answer 3 · Post on Thu, 09/02/2017 8:08pm

Jmaths.SG Post on Thu, 09/02/2017 8:08pm

able to post the solution? or at least the answer?

TeaBoh · Answer 4 · Post on Thu, 09/02/2017 9:37pm

TeaBoh Post on Thu, 09/02/2017 9:37pm

Hi Jmaths.SG

answer is 0.4944

Jmaths.SG · Answer 5 · Post on Thu, 09/02/2017 10:03pm

Hi TeaBoh,

Thanks for your answer.

By substituting x= 0.4944 into the equation shown in the pic, I get different values on LHS and RHS.

But if I sub x = 0.4944 into the equation suggested by Acestarling, then the values on LHS and RHS are the same.

From this, I can only conclude that the equation shown in the pic is wrong, and the error is “3x”, which should be “3^x”.

Acestarling · Answer 6 · Post on Thu, 09/02/2017 10:38am

hi, TeaBoh

Sorry, I also not so confident how to solve this question.

If the question is 3^x ( 5^2x ) = 6 ( 2^x ) , then the answer is 0.4944.

TeaBoh · Answer 7 · Post on Thu, 09/02/2017 7:59pm

Hi Acestarling

I have solved the question this morning after breakfast. Last night, my brain blocked. Anyway, thank you for your great help….