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heng
added a new photo:
please help me in no. 29 and 34. please :)
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June 11, 2014 at 7:32am
ShamSuiisses
:
29. 5 ^ (x-1) = 9 --> log 5 ^ (x-1) = log 9 --> (x-1) log 5 = log 9 --> x-1 = log 9 / log 5 | x = (log 9 / log 5) -1 Use your calculator. btw, log base is 10 for all.
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June 11, 2014 at 9:58am
ShamSuiisses
:
34. (Not really sure about this. But this is my answer for it.) ><
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June 11, 2014 at 10:48am
Shu Yun
:
Last step for Qn29 shld be x= log9/log5 + 1. Qn34 is correct :)
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June 11, 2014 at 11:30pm
heng
:
:) thank you very much :D by the way, question 34 is expressing q in term of p :) i dont know how to do :(
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June 12, 2014 at 12:07am
ShamSuiisses
:
lol i messed up for both then! >< hahaha.
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June 12, 2014 at 8:00am
ShamSuiisses
:
now i know where all my deducted marks go to.
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June 12, 2014 at 8:01am
Shu Yun
:
oops haha sorry [tag]heng:5396bc2b1cc1f[/tag]. The working would be the same until second last step of ShamSuiisses ans. Cont' from his working,[ieqn]\frac{q^{1/2}}{3q}=\frac{p^{2}}{p}\\ \frac{q^{1/2}}{q}=3p\\ q^{-1/2}=3p\\ (q^{-1/2})^{-2}=(3p)^{-2}\\ q=\frac{1}{9p^{2}}[/ieqn]
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June 12, 2014 at 11:06pm
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