## Question

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Anyone can contribute an answer, even non-tutors.

##### James

Date Posted: 10 months ago
Views: 37

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1st
Hope this helps.
I'm not sure if you wrote log2(2x-5) or log2(2x) - 5 though...
But I assume it's log2(2x-5)
Date Posted: 10 months ago
James
10 months ago
Thank you for solve this problem and explain it to me
James
10 months ago
U really help me a lot.i hope you can help me when I got any questions
Clement Cheng
10 months ago
No problem. Glad I was able to help.
James
10 months ago
I would like to ask something.why i need to change the base to base 2
Clement Cheng
10 months ago
This is to make the right hand side into a number, which is easier to work with.
Clement Cheng
10 months ago
You can also write log8(2) = log8(8^(1/3))
= (1/3)log8(8) = 1/3
James
10 months ago
Am I need​ to follow the base of the log inside the bracket in the left side
Clement Cheng
10 months ago
What do you mean?
James
10 months ago
I mean do I need to follow the base 2 in the log 27(log base 2 ^2x-5)in the left side when I change the base in the right side
James
10 months ago
Can you show me that step more detailly
Clement Cheng
10 months ago
No, you don't have to follow. But for this question, it just happens that the base for the right hand side also changes to 2.
James
10 months ago
Oh
James
10 months ago
Clement Cheng I have another similar question.can I send it to you
Clement Cheng
10 months ago
Sure
James
10 months ago
Log16(log3^2x-1)=log4^2
Clement Cheng
10 months ago
The 2nd and 3rd log terms don't have bases?
Clement Cheng
10 months ago
Can I clarify if it's log(base 3)(2x - 1) or log(base3)(2x) -1 ?
James
10 months ago
Got.the second log base is 3 and third log is 4.sorry .I forget to write base there.
James
10 months ago
The first statement
James
10 months ago
Log(base 3)(2x-1)=log (base4)(2)
Clement Cheng
10 months ago
Ok thanks
James
10 months ago
Welcome
clear {{ downvoteCount * -1 }} Downvotes
2nd question. Hope this helps.
Date Posted: 10 months ago
James
10 months ago
Why need to change the base to base 2 in the left side
Clement Cheng
10 months ago
I didn't change the base on the left side. The right side change to base 2, so I can remove the log in the end.
You can also do for the right hand side:
log(base4)2 = log(base4)4^(1/2)
= (1/2)log(base4)4 = 1/2
James
10 months ago
Can I change the log base to base 2 by seeing the power on the base in the right side to remove the log.for example , I use this question.can I change the base to 2 by seeing the power 2 on the top of the base 4 in the right side
Clement Cheng
10 months ago
Why does the base have a power?
Clement Cheng
10 months ago
The base is changed to 2 so that it becomes (log(base2)2) / (log(base2)4) which is 1/2
James
10 months ago
Is the picture that I sent is correct
James
10 months ago
Clement Cheng
10 months ago
correct
James
10 months ago
Thank you Clement Cheng for explaining it patiently to me
James
10 months ago
I will send you message you if I got any other questions.can i
Clement Cheng
10 months ago
The numbers after the base is not it's power. They should be just normal numbers.
i.e. log(base4)2 and not log(base4)^2
Clement Cheng
10 months ago
James
10 months ago
Oh.i understand now.thank you
James
10 months ago
Clement, are you free now? I got another question
James
10 months ago
U also can send me the answer tomorrow
Clement Cheng
10 months ago
You can send me now.
James
10 months ago
Clement Cheng
10 months ago
Em can I ask if it's 9^(log(base3)x) or
9 * (log(base3)x) ?
James
10 months ago
I think it is the second statement
James
10 months ago
9*(log(base3)x)=4
James
10 months ago
I would like to ask how to do the second statement
James
10 months ago
Can you show me how to do the second statement
James
10 months ago
U can also send me tomorrow
James
10 months ago
Goodnight
Clement Cheng
10 months ago
Ok. Goodnight.
James
10 months ago
Ok
James
10 months ago
Clement can you help me to solve my question