48 items are filed under this topic.
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The exponential form of log8=P |
2012-04-25 |
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From Kristina:
what is the exponential form of log8=P
Answered by Penny Nom. |
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A log equation in exponential form |
2011-11-11 |
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From Sarah:
Express the equation in Exponential form
log2 to the 16th power=4
Answered by Penny Nom. |
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Uses of logarithms |
2011-11-09 |
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From BEA:
what is the use of logarithmic functions in real life or daily life?
Answered by Penny Nom. |
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An equation involving logarithms |
2010-09-27 |
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From mindy:
Hi,
I am trying to find x, the equation is:
log_2(log x + 2 (log x)^(1/2) + 1) - 2 log_4((log x)^(1/2) + 1) = 1
Thank you very much for your time. =)
Answered by Harley Weston. |
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Log[f(x)] |
2010-03-08 |
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From sourabh:
What is the number of solutions of the equation
9 x 2 - 18 x + 5 = 0 for x, such that the expression
log10[(x+1)(x+2)] exists?
Answered by Harley Weston. |
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541.39(1 + i)^15 = 784.09 |
2009-10-14 |
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From Fitore:
Hi, I noticed that this question was already posted up, however I was hoping I could solve it without having to use logs. Can you please help me? The equation is:
541.39(1 + i)^15 = 784.09
Answered by Penny Nom. |
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Exponential form |
2009-08-05 |
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From motaz:
Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x
Answered by Stephen La Rocque. |
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Log_7 (4X) = Log_14 X |
2009-07-08 |
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From Mukulu:
Help me with this question because i tried my level best to get the right answer but i failed Log_7 (4X) = Log_14X
Answered by Stephen La Rocque. |
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(logx)squared + log (xcubed ) +2 =0 |
2009-05-19 |
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From michael:
Solve for x: (logx)squared + log (xcubed ) +2 =0
Answered by Penny Nom. |
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An inequality with logs |
2009-03-06 |
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From Indrajit:
(x/10)^(logx - 2)<100..........how to solve this one??
Answered by Stephen La Rocque. |
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6^x = y |
2009-02-12 |
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From Jamie:
Find x:
6^x=y
Answered by Harley Weston. |
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A log base 2 problem |
2008-11-26 |
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From dave:
solve for x
(log base 2 of x) - (log base 2 of (x-2)) = 3
Answered by Penny Nom. |
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How do you solve "logx^4=4? |
2008-11-17 |
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From Scott:
How do you solve "logx^4=4"?
Answered by Penny Nom. |
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4^x = 2^x + 12 solve for x |
2008-10-02 |
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From Dave:
4^x = 2^x + 12 solve for x.
Answered by Harley Weston. |
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What is the derivative of (2^sinx)/(logbase4(2x+1))? |
2008-09-16 |
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From Jesse:
What is the derivative of (2^sinx)/(logbase4(2x+1))
Answered by Harley Weston. |
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2^x = 1,000,000 |
2008-09-06 |
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From Peter:
How do I solve for "x" in the following equation: "2 to the power of x = 1,000,000" ?
Answered by Penny Nom. |
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Solve e^x + e^(x+1) = 250 |
2008-08-25 |
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From Laura:
"solve this equation correct to three decimals"
e^x + e^x+1= 250
Answered by Penny Nom. |
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Write log_2 (1/8) = -3 in exponential form |
2008-06-27 |
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From Jaime:
how do you write log2 (1/8) = -3 in exponential form?
the 1/8 is a fraction and the 2 is a base of 2
Answered by Penny Nom. |
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limit x->0 (logx-log(x-1)) |
2008-05-22 |
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From kritica:
lt x->0 (logx-log(x-1))
Answered by Harley Weston. |
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Which is larger, 727464^512693 or 624610^518548? |
2008-05-18 |
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From Yahweh:
Lets say I have two very large numbers in the form of a^b:
727464^512693 and 624610^518548
I want to calculate which number is larger, but its unreasonable to type these numbers into a spreadsheet to get an answer right away. How could I determine the larger or the two numbers efficiently?
Answered by Stephen La Rocque. |
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The inverse of a function |
2008-05-03 |
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From keith:
please help me find the inverse of this function:
h(t) = 2 + 4 ln(1-5t)
Answered by Stephen La Rocque. |
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log2x+log(x+4)=1 |
2008-04-12 |
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From ryan:
solve the equation for x, log2x+log(x+4)=1
Answered by Penny Nom. |
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log(0.81) |
2007-06-28 |
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From Ade:
If log 3 = 0.477 . The answer of log 0.81
Answered by Harley Weston. |
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A problem involving logs |
2006-11-26 |
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From Beth:
any help would be appreciated on how to solve without using the change of base formula for logarithms in the solution and check of the solution!!!
log256 (x) + log16 (x) + log4 (x) + log 2 (x) = 7/4
Answered by Stephen La Rocque and Penny Nom. |
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How many digits are in the number 2^64? |
2006-06-14 |
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From Trang:
How many digits are in the number 264?
Answered by Stephen La Rocque. |
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Differentiation, powers and logs |
2006-01-06 |
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From Claudia:
Question: how do I find the derivative of
x* ln(x+(e^2))^2
x^lnx
x^(e^(-x^2))
Answered by Penny Nom. |
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Some logarithm problems |
2005-01-27 |
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From Jo:
Given ln x=7.1; ln y=8.2, Find ln(x^3y^7)
Answered by Penny Nom. |
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Logs |
2004-02-29 |
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From Sandy:
find X
3/2logb4-1/2logb8+logb2=logbx
my book uses prop 7 to rewrite as
logb4raised3/2-logb8raised2/3+logb2=logbx; then writes
logb8-logb4+logb2=logbx how did it get here?
Answered by Claude Tardif. |
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A problem with logs |
2004-02-22 |
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From Caitlyn:
problem: ln x + ln (x-2) = 1
I can solve this on the calculator, but the book wants 1+ [(sqroot)1+e]. How can I get the e?
Answered by Penny Nom. |
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Logarithms |
2004-02-01 |
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From A student:
Where did the word logarithmic come from? Where/whom did it originate?
Answered by Harley Weston. |
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Domain of a function |
2003-10-14 |
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From Karim:
Find the Domain of the Function
H(x) = Log3 (4x + 7)-10
H(x) = log base 3 times 4X plus 7 minus 10
i am having problem solving these kinds of problems.
Answered by Penny Nom. |
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Solve x = y^z for z |
2003-06-28 |
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From Nathan:
If x = y^z is there a way to solve for z, if x and y are given, without guessing or already knowing the answer?
ie: 64 = 2^z
6 is the obvious value for z. Is there a way I could solve for this variable using a formula, which would also apply when more complex values were substituted for x and y?
Answered by Penny Nom. |
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1996^1999 and 1999^1996 |
2001-07-29 |
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From Rajesh:
what is greater 19991997 or 19971999?
Answered by Chris Fisher. |
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Two calculus problems |
2000-05-01 |
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From Kaushal Shah:
How Do WE Integrate the following Functions, - Integral xtanx dx
- How was natural base "e" discovered and why e=2.7.......
Answered by Claude Tardif. |
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Logs |
2000-04-12 |
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From Jessica:
Write as a single log 3ln x - 2ln(y+e) + 5ln(x-12) - 4ln y
Answered by Harley Weston. |
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Characteristic of a logarithm |
2000-03-14 |
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From Andrew Strauss:
What is the characteristic of log base 18 of 1980 ?
Answered by Harley Weston. |
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Logarithms |
2000-01-18 |
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From Jennifer:
Hi I have a test tomorrow and I was wondering if you could help me with these two problems. Explain how to express y in terms of x if log3y=4log3(2X) The LN key on your scientific calculator is not working, but the ex and LOG keys are. Write directions for calculating a natural logarithm using the ex and LOG keys. Explain why these directions will get you the right answer.
Answered by Harley Weston. |
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Three algebra problems |
1999-12-28 |
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From Stephanie Branton:
- If P represents the product of all prime numbers less than 1000, what is the value of the unit's digit of P?
- Do any real numbers a and b exist such that: ln(a+b)=ln a + ln b? if so, what are they?
- Define a function by: f(x)=1/1-x where x is not equal to 0,1. what is f(f(f(a)))?
Answered by Harley Weston. |
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Logarithms |
1999-12-16 |
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From Pierre:
Can you please answer those three question - inverse or the exponential function.
logx 81 = 4,
x expo4 = 81,
x = +or- 4square root 81,
x = +or- 3
s.s = {3}
Why is -3 not acceptable. - .
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Answered by Harley Weston. |
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Two derivatives |
1999-11-16 |
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From Gina Renicker:
The derivative of: y=e(xlnx) and y=x2arctan(x1/2)
Answered by Harley Weston. |
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Derivatives with logs |
1999-10-26 |
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From Kate:
What is the derivative of 5 to the 5x-2 at x equals 0.8?
Answered by Harley Weston. |
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-log(a) |
1999-10-22 |
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From Brenda Miskimmin:
I need to know the mercury concentration in mg/L or ng/L for the following: -log M (Hg) = 8.5 where mw of Hg=200.59 (it's the negative sign in front of log that confuses me).
Answered by Harley Weston. |
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Solving using logs |
1999-10-11 |
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From Rich Bolton:
Here's my question: $541.39(1+i)15=784.09 Can you please show me how to do this?
Answered by Penny Nom. |
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A Series |
1999-04-20 |
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From Deepak Shrestha:
Given the sequence an=e^(-n*Ln(n)), does the series converge and why?
Answered by Harley Weston. |
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Logs |
1998-10-21 |
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From Benny:
What does log means? How come we have to use log
Answered by Chris Fisher. |
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Two Problems |
1998-07-28 |
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From James Pulver:
How do you solve these problem? If log abc=16 and log ac=12 , find b. (The logs are log base 10.)
and
If a and b are real numbers, i^2 = -1 and (a+b)+5i=9+ai what is the value of b?
Answered by Jack LeSage. |
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A Problem with Logs. |
1997-11-26 |
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From Herman:
Given log 24=a, log 25=b and log 26=c, express log 39 in terms of a, b and c.
Answered by Penny Nom. |
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Natural Logarithm Functions |
1997-04-23 |
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From Rickson:
The following two questions are some of my son's homework that he is having trouble with......any advice or assistance would be appreciated. (eX)5=1000.............the X and 5 are exponents lnx + ln(x+3) = ln10 In each question the problem is to find x.
Answered by Harley Weston. |
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