Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 131452: please help me to solve this question
solve for 'x':
3ln2x-4=2ln2x

3In2x-4=2In2x
3In2x-2In2x=4
In2x=4
x=4/In2
Click here to see answer by ijeoma(3)

Question 131496: Hi i need help with this question on logarithms.

Evaluate this logarithm.
log base 8 of 1/256
Thank you very much
Click here to see answer by dkspoet(13)

Question 131513: Hi the section im working on is natural logs Im confused on this problem.
Use the properties of logarithms to simplify each question and solve it. Round to the nearest hundredth.
ln(x+2)+ln(x-2)=0

thanks :)
Click here to see answer by stanbon(57377)

Question 131509: Hello could you help me with my homework on logarithms? Its due tomorrow
Here's the question
Write each logarithmic expression as a single logarithm.
1/3(log base 4 of x + log base 4 of z)-2log base 4 of y
Thanks so much i really appreciate it!!
Click here to see answer by stanbon(57377)

Question 131518: I need help solving this equation on logarithms.

Solve each equation. Round to the nearest hundredth.
log of 5x=3
thanks for the help!!!!
Click here to see answer by stanbon(57377)

Question 131451: I cannot figure out how to rewrite this logarithm as one simplified logarithm
log(6x)+5log(3x)-3log(9x)
Please help.
xandra
Click here to see answer by Edwin McCravy(8909)

Question 131546: Solve for x:
2logx=log2+log(3x-4)
Click here to see answer by Edwin McCravy(8909)

Question 132024: Solve the equation. Round answer to three decimal places:5 on exponent "x" = 22
Click here to see answer by solver91311(16897)

Question 131921: please
solve for x :
Click here to see answer by bucky(2189)

Question 131920: please
simplify
Click here to see answer by TakeATuition.com(57)

Question 132168: What does 2 log2 8 - log4 256 mean or equals becuase I have no idea on what it means?...Help Me please
Click here to see answer by edjones(7569)

Question 132167: What does 2 log2 8 - log4 256 mean or equals becuase I have no idea on what it means?...Help Me please
Click here to see answer by stanbon(57377)

Question 132173: please help me determine what M is if M=Log(8) 2+log81(27)-log(5)25+log(9)1
Click here to see answer by stanbon(57377)

Question 132312: I am having problems remembering domains. I need to find the domain of the following:
f(t) = log(t-5)
Is the domain (-infinity, +infinity)?
Click here to see answer by jim_thompson5910(28595)

Question 132315: A question on domains with a natural logarithm. Here is it:
g(x) = ln(x+4)
It seems to me that the domain would be: (-4, +infinity).
Click here to see answer by jim_thompson5910(28595)

Question 132314: This question was on a test my teacher recently gave me, and needless to say, I got it wrong. I got stuck about half way through it. Can you please help me?

The original problem looked like this:

I first converted it to log form: xlog5 = x-6log2
Then punched in log5 and log2 into my calculator: x(.69897) = x-6(.30102)
Next, I distributed the -6: .69897x = x-1.80617
...and I'm stuck! Help, please!

Click here to see answer by jim_thompson5910(28595)

Question 132327: A quick question on natural logarithms.
lnx = 1.56
What is x?

Click here to see answer by jim_thompson5910(28595)

Question 132329: How do I solve for log square root of x/y?
Click here to see answer by jim_thompson5910(28595)

Question 132628:
Click here to see answer by jim_thompson5910(28595)

Question 132653:
i know you have to first get the same bases but how?
Click here to see answer by jim_thompson5910(28595)

Question 132716: log3(x-6)=3
i cannot find the answer
Click here to see answer by stanbon(57377)

Question 132970: Can you explain me how do I find the asymptotes of the functions f(x)=3^x and
g(x) = log5(2x).
Click here to see answer by josmiceli(9687)

Question 132932: Evaluate:
log_2 (1024)^3

Click here to see answer by vleith(2825)

Question 132932: Evaluate:
log_2 (1024)^3

Click here to see answer by nycsharkman(136)

Question 133048: Hello, I'm trying to solve for x in the following equation:

Click here to see answer by stanbon(57377)

Question 133119: I need help with a couple equation I need to solve concerning logarithms:
1)

I got that x=0 in this problem...but I am really confuses though
Click here to see answer by Nate(3500)

Question 133420: need help with this problem. instructor did not cover it.
find the value of log3 base 2 multiplied by log4 base 3 multiplied by log5 base 4 multiplied by log6 base 5 multiplied by log7 base 6 multiplied by log8 base 7. the answer is 3 but i do not understand how they came to this solution.
Click here to see answer by stanbon(57377)

Question 133512: Rewrite as a single logarithm.
3lny+2lnx-lnw
Click here to see answer by solver91311(16897)

Question 133532: Need Help sovling problems below. Can you show me step by step how to solve them?
1. Log3 4 - Log3 x = 2
2. ln 4/7

Click here to see answer by edjones(7569)

Question 133515: Rewrite as a single logarithm.
1/2log(x-3)-2/3log(x+1)
Click here to see answer by edjones(7569)

Question 133600: 7^(5log7(x)) = 10
Click here to see answer by stanbon(57377)

Question 133653: What is the inverse of:
a) f(x)= log2(lnx)
b) f(x)= 7+10^2x+4
Click here to see answer by stanbon(57377)

Question 133875: 2 log x + 1/2 log y
Click here to see answer by edjones(7569)

Question 134127: Used the symbol @ for the regular symbol.
Given that cos@ = - 4/5 and @ is in Quadrant 2, find:
sin @=
sin 2 @=
cos 3 @=
tan @ / 2=
sin (@ + 60 degrees)=

Click here to see answer by Edwin McCravy(8909)

Question 134345: equation (1/5)-6=15625 in logarithm form
find the value of x log 2 32=x
express log (x+5) log as the logarithm of a single quanity

Click here to see answer by stanbon(57377)

Question 134409: solve e^x - 2 = 15e^-x
Click here to see answer by vleith(2825)

Question 134410: solve log(7x^2+30x+2) - 2log(x+1) = 1
Click here to see answer by vleith(2825)

Question 134392: Write as logarithm of a single quantity
2ln8 + 5lnz
Click here to see answer by ankor@dixie-net.com(15657)

Question 134530: evaluate exactly:
sin(sin^-1(5/13)+cos^-1(3/5))
Click here to see answer by nycsharkman(136)

Question 134545: Dear Tutor,
I have searched google and relevant pages on logarithms, and whilst I think I now understand them in principle and am able to solve simple questions I am totally unable to use my calculator to solve e.g.
log (to base 2) 512 = 9. OR log (to base 2) 16 = 4
I can't find any webpage that will tell me what to type into my calculator (the calculator's instruction manual is equally useless).
I have a common scientific calculator (CASIO fx-85 MS, similar to the fx-300MS). Please coud you tell me exactly what buttons I need to press in order to solve this type of problem.
Thank very much,

Edward S
Click here to see answer by vleith(2825)

Question 134542: 2log base3(x+4)=log base 3 9+2
solve for x
Click here to see answer by solver91311(16897)

Question 134633: Here is another one:
Write the equation in it's equivalent form:
log416=2 (4 is lower)
Thank you
Click here to see answer by solver91311(16897)

Question 134668: I do not understand this problem can you help me?
Write the equation in it's logarithmic form:
5^2=x
thanks
Click here to see answer by stanbon(57377)

Question 134670: This has made me lose sleep:
Solve the logarithmic equation. be sure to reject any value that is not in the domain of the original logarithmic expression. give the exact answer:
log2(x-1)=1+log2(x-5) (2 is lower)
Thanks much
Click here to see answer by stanbon(57377)

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