Tuesday

March 3, 2015

March 3, 2015

Number of results: 267

**precalculus**

Solve the logarithmic equation. Express your solutions in exact form only. 18e^-x -e^x=7
*November 11, 2011 by tina*

**college algebra, Please help!!**

solve the following logarithmic equation 2log2(lower than g)^(x-2)+log2^2=3 x=?
*November 27, 2012 by ladybug,I need help please. *

**Calculus**

Use logarithmic differentiation to find the derivative of f(x) = x^x+2 and simplify. Please show steps. Thanks.
*April 16, 2013 by Rene*

**algebra.can you ck my answers**

Write the equations in logarithmic form 216=6^3 I got 0 16-(1/4)^-2 1/2 thank you very much for your help
*June 1, 2014 by Mary Ann *

**Math**

use the properties of logarithms to simplify the logarithmic expression. log10 (9/300) Please explain!!
*July 28, 2009 by Hannah*

**Calculus Help**

Use logarithmic differentiation to find the derivative of the function. show steps please! y=(e^-xcos^2(x))/(x^2+x+1)
*March 16, 2014 by Tim*

**Math**

Use the properties of logarithms to rewrite and simplify the logarithmic expression. 1.) log(9/300) 2.) log2(4^2 x 3^4)
*November 6, 2014 by Porsha*

**Math**

Use the properties of logarithms to rewrite and simplify the logarithmic expression. 1.) log(9/300) 2.) log2(4^2 x 3^4)
*November 6, 2014 by Porsha*

**MATH**

How do I Find The Domain, Vertical Asymptote, and X- intercept of this logarithmic function: f(x)=6+log base 6 (x-3) HEEEEELLLLPPPP!!!!!!!! What do you need help on?
*October 28, 2006 by James*

**college**

I'm dealing with logarithmic- need help with some questions please- evaluate log12 782 to three decimals
*December 5, 2009 by gigi*

**Logarithmic Algebra**

let log2=a, log3=b, and log5=c. express the indicated logarithm in terms of a, b, and c. log6/25 log 100
*April 9, 2014 by Jen*

**Precalculus**

This is for solving exponential/logarithmic functions: (This is a base e Logarithmic function I would assume): e^(4x)/10 =4^x-2 ? I understand the properties of logs for the most part, but I have a hard time figuring out the step-by-step process on how to solve exponential/log...
*December 11, 2012 by Sarah*

**calculus**

solve the logarithmic equation. Be sure to reject any value of x that is not in the domain. In square root x+7=1 x= ? What is the decimal approximation to the solution? x= ?
*January 1, 2013 by NayNay*

**Calculus Help**

use logarithmic diff. to find the derivative of the function. Show steps please! so I can see how it is done. Thank you so much! y=(e^(-x)cos^(2)(x))/(x^(2)+x+1)
*March 18, 2014 by Maho*

**Mathematics**

For the graphed function f(x) = (4)^(x - 1)+ 2, calculate the average rate of change from x = 2 to x = 4 -68 -30 68 30 Which logarithmic graph can be used to approximate the value of y in the equation 4y = 8?
*May 13, 2014 by Stokedtobehere*

**Precalculus **

I REALLY NEED HELP WITH THIS QUESTION, PLEASE HELP!! Give an example of a logarithmic function g, which has a vertical asymptote x = –2, and passes through the origin.
*March 3, 2010 by jh*

**precalc/trig**

Solve the Logarithmic equation algebraically. Give an Exact Answer and an approximation for x to four decimal places. 20 log(2x+2)=45
*December 5, 2011 by Alexander*

**calculus**

Use logarithmic differentiation to find the following derivative: y=(x+6)^4/(x-5)^6. Please show all step so I can understand for future reference.
*April 20, 2013 by anonymous*

**Calculus**

Use logarithmic differentiation to find the following derivative y=(x+6)^4/(x-5)^6. Please show all steps so I can follow for future understanding. Thanks.
*April 21, 2013 by Sean*

**Math**

Write the exponential equation in its equivalent logarithmic form. 5^4 = 625 I know I have to change it to log or ln and something is equal to I think either 4 or 5.
*July 29, 2011 by Ms. Tracy*

**Math**

Solve the logarithmic equation for x. Log3(x^2 − 5x − 9) = 3 I Have no idea
*November 22, 2011 by Anonymous*

**Math/Trig**

Which logarithmic equation is equivalent to L^m = E 1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L
*February 11, 2012 by Charles*

**Calculus AP **

5.2 The Natural logarithmic function Differentiate the function problem # 13: f(x)= sqrt(x) Inx
*April 18, 2012 by jackie*

**math**

Give an example of a logarithmic equation that cannot be solved and explain why it cannot be solved. (3 marks)
*March 17, 2013 by Jonathan*

**prcalculus**

change the logarithmic expression to an equivalent expression involving an exponent. log416=x
*March 24, 2013 by deanne*

**Math Help**

Change the exponential statement 5^x =125 into an equivalent logarithmic statement.
*December 17, 2014 by Jackie*

**Math- Alg 2**

Which logarithmic equation is equivalent to the exponential equation below? 3^x=28
*January 27, 2012 by CAMILA*

**math**

Give an example of a logarithmic equation that cannot be solved and explain why it cannot be solved.
*March 18, 2013 by Hasane*

**Math**

Write each logarithmic expression as a single logarithm: Log 2 + 3 log 1
*April 19, 2014 by Dominique*

**Math(Please help)**

Logarithmic differentiation f(x)=(2x-1)^-2 (x+3)^4 at x=1 f'(x)= -2*2/2x+1 + 4*1/x+3 [(2x-1)^-2)(x+3)^4 and then I plug in 1. I am having trouble getting an answer when I plug in 1.
*April 30, 2011 by Hannah*

**algebra**

express as an equivalant expression that is a single logarithmic and simplfy if poissible loga(2x+10)-loga(x^2-25)
*June 3, 2011 by mema*

**Math**

Solve the logarithmic equation. Please show all of your work. Loga(x+4) + loga(x-4) = 4
*June 8, 2011 by Bethany*

**algebra**

change the logarithmic expression to an equivalent expression involving an exponent. 4^16=x log (base4)16=x is it x=e^2?
*September 2, 2012 by alli*

**alg**

change the logarithmic expression to an equivalent expression involving an exponent. 4^16=x log (base4)16=x is it x=e^2?
*September 2, 2012 by alli*

**Have I done this right**

write the equations in logarithmic form 216 = ^63 answer In(e^4.5) 49 = (1/7) ^-2 answer 2=log(3x)
*May 13, 2014 by Nellie*

**Math**

What is the logarithmic function modeled by the following table? x f(x) 8 3 16 4 32 5 f(x) = logx 2 f(x) = log2 x f(x) = 2 log10 x f(x) = x log10 2
*October 8, 2014 by Please Help Me*

**college algebra**

Solve the logarithmic equation. Log x +log2x = 4 Wouldn't this be no solution because log x is undefined?
*April 24, 2013 by Deb*

**Math**

How would you write the following exponential form to logarithmic form: 4^y= (1/64) My answer is: log4(1/64)=y. Am I corret?
*November 13, 2014 by kim*

**math;SOS**

solve the logarithmic equation. log(5x+7)=1+log(x-9)
*December 2, 2012 by kristina*

**Algebra**

I need to rewrite the following as an equivalent logarithmic yt = x I wrote logy=logt=logx. My teacher said that was wrong. Can someone guide me on the right answer?
*May 8, 2010 by dani*

**college algebra **

solve the logarithmic equation. Please show all work. log5x+log5(x-3)=log5(x+5)
*March 4, 2012 by Tammy*

**math**

Determine the value of each of the following logarithmic expressions. Do not change bases. A) log8 4 <----- 8 is subscript b)log 1/3 27 <---- 1/3 is subscript
*March 19, 2012 by mark*

**Calculus**

Use logarithmic differentiation to find derivative of y=x^x^2 x > 0. Please show all steps so I can follow the steps. Thank you.!
*April 20, 2013 by Sean*

**math -logarithm **

Write the equations in logarithmic form. (a) 729 = 93(9 to the 3rd power) (b) 25 = 1/5 −2( 1/5 to the -2 power) a = bc ( c squared)
*June 3, 2014 by leelee kay *

**Algebra**

Hi, I'm trying to learn logarithmic form and I'm kinda of stuck Write in exponential form: 1.log(3)6561=x 2.x^4 = 625 Thank you
*November 21, 2011 by Thomas*

**algebra**

Hi, I'm trying to learn logarithmic form and I'm kinda of stuck Write in exponential form: 1.log(3)6561=x 2.x^4 = 625 Thank you
*November 21, 2011 by Thomas*

**math**

chane the logarithmic expression to an equivalent expression involving an exponent log416=x **the 4 is supposed to be dropedd down lower by the g.**
*January 3, 2013 by Heather*

**Algebra**

Solve the logarithmic equation. log2(4x)-log2(x+3)=1
*July 29, 2011 by Meghan*

**math**

solve the logarithmic equation. log(5x+7)=1+log(x-9)
*December 2, 2012 by brad*

**Math**

Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of In(x) in your answer.) log[8.4](112)=
*October 30, 2012 by Ms. Jackie*

**Calculus**

Use logarithmic differentiation to find the derivative of the following: y=x^x^2 x>0 Please show all steps so I can following for future understanding
*April 21, 2013 by Sean*

**pre-calculus**

Change the logarithmic expression to an equivalent expression involving an exponent. Log7343=x the 7 should drop down lower than the 343.
*October 9, 2012 by ladybug*

**adv functions**

Hi! I need help with determining the value of each of the following logarithmic expressions. Do not change the bases- thx a) log[base8]4 b)log[base(1/3)]27
*April 7, 2013 by Julia*

**pre-cal**

use the properties of logarithms to condense the logarithmic expression. write the expression as a single logiarithm whose coefficient is 1. 2IN(x+3)-3INx
*October 9, 2012 by ladybug*

**math--please check**

Change the logarithmic equation to an equivalent equation involving an exponent. log8^64=2 **note that the 8 should be lower than the g** 8^(log64)=8^2 64=8^2 is this correct
*January 9, 2013 by Roger*

**Calculus**

Suppose that ax^2 + bx + c is a quadratic polynomial and that the integration: Int 1/(ax^2 + bx + c) dx produces a function with neither a logarithmic or inverse tangent term. What does this tell you about the roots of the polynomial?
*January 10, 2008 by mathstudent*

**Algebra**

For the exponential function ex and logarithmic function log x, graphically show the effect if x is doubled. I am having trouble figuring out my points to plot on the graph.
*February 16, 2009 by Mario*

**precalculus**

solve logarithmic equation in exact form only. show work. log_5(x-3)+ log_5(x-6)-log_5(x+1)=2
*January 15, 2012 by Sara*

**precalculus**

solve the logarithmic equation . express solution in exact form log5(x-9)+log5(x+4)=1+log5(x-5)
*November 11, 2011 by mz deedee*

**Trigonometry (Logarithmic Function)**

If log_5(9) = 1.365 and log_5(2)=0.431, then what is log_5(24)? How to find the solution for this one?
*February 22, 2015 by Clint*

**college algebra, Please help!!**

change the exponential expression to an equivalent expression involving a logarithm. 1.9=a^6 a=1.1129 is this the correct logarithmic expression???
*November 27, 2012 by Heather*

**Pre-Cal**

Solve the following logarithmic equation. Exact words only: log 3(x+4) = 2+log3(x-20) the 3 in the part of log (3)should be lower just didn't know how to type it in here
*January 1, 2013 by phyllys*

**Algebra II**

How to solve Log (9x+5) - Log ((x^2)-1) = 1/2 16 16 (The 16 is from the logarithmic function : b) (y=log x) b Could anyone post the answer to this?
*May 18, 2010 by Anonymous*

**Math**

Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log3(x+2) + log3(x+8) – 2 = log3(x+3)
*June 9, 2011 by Allison - Carson*

**ALGEBRA**

Solve the exponential equation. Give the exact value for x. (Express all logarithmic functions in terms of ln(x) in your answer.) text((a) ) e^x = 10 x = text((b) ) e^x = 2.0 x = text((c) ) e^x = 37.9 x =
*April 25, 2012 by Randy*

**Algebra 2**

Can someone please explain to me how to solve logarithmic equations? Some examples are: -5=log2X 3^5x+1= 40 and log6X+(log6)7=(log6)35 I hope that makes sense because logs are hard to type.
*April 18, 2008 by JaneLee*

**Pre-Calculus**

I need help solving this logarithmic equation: ln x + ln (x+3) = 1. I know ln x + ln (x+3)=ln [x(x+3)] and that is ln x^2 + 3x when broken down. Then you have to get rid of ln by taking the natural base e of both sides so in the end you have x^2+3x = e^(1). That's when I got ...
*May 3, 2008 by Kelsey*

**Logarithmic Function help**

Ok, I was getting all my answers right until I stumbled on this one: 5e^0.2x=7 This is what I was doing: 5e^0.2x=7 5lne^0.2x=ln7 5*0.2x=ln7 0.2x=(ln7/5) ??? The answer is 5ln(7/5) but i do not know how they derived to this. Thank you so much!
*June 7, 2009 by Marlon*

**Surds please help!**

(square root of a + 3 square root of b /a - b) - (2/square root of a + square root of b).
*March 6, 2014 by Jnr John*

**Calculus**

Find the solution of the logarithmic equation: ln(x+8)+ln(x–8)=0 Im not sure how to approach this one. I tried moving the ln(x-8) to the other side and solving for x and that did not work. I also tried putting everything as an exponent to e. please help! thanks
*October 29, 2010 by Adam*

**Algebra**

Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. y=log7 x
*June 13, 2010 by Tom Allison*

**Algebra**

Please help...Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. y=log7 x
*June 12, 2010 by J. Ed*

**Chemistry**

If the pH of grapefruit is 3 and the pH of beer is 5, how many times more acidic is the grapefruit juice than the beer? According to the logarithmic scale
*November 10, 2010 by Ash*

**Re: Algebra II **

How to solve Log (9x+5) - Log ((x^2)-1) = 1/2 16 16 (The 16 is from the logarithmic function : b) (y=log x) b Could anyone post the answer to this? 16 is supposed to be next to Log(16) but lower. This is for both the Logs in the equation.
*May 18, 2010 by Anonymous*

**Logarithmic Scales**

In 1995, Japan had an earthquake of magnitude 7.2. What is the magnitude of an earthquake that is twice as intense?
*March 28, 2012 by Anonymous*

**calculus**

use the properties of logarithms to condense the logarithmic expression. write the expression as a single logarithms whose coeffient is 1. Inx+In5=? Can you show work
*January 7, 2013 by Heather*

**solving logarithmic inequality**

0.2 <= logx < 2 take the antilog of each side.. 100.2 < x < 10^2
*February 23, 2007 by Jen*

**College Algebra**

Solve the logarithmic equation for x. log(base 3)(x+6) - log(base 3)(x+1)=1 urgent! help!
*December 4, 2012 by Patrick:)*

**College Algebra**

Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log base 6 (64x^3+1)-log base 6 (4x+1)=1
*January 18, 2012 by Jo *

**Algebra-Please check**

Write y = 10^(x) as a logarithmic function Choices are log(x)10 = y log(y)x = 10 log(10)y = x log(x)y = 10 I think it is log (10)y = x
*November 16, 2010 by Annie*

**Intermediate Algebra**

Can anyone help? I have a test and this is the last question I need answered. I'm lost and exhausted! Thanks for any help! Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. y...
*June 13, 2010 by Kris B*

**Math**

Select any concept from this week.(Linear equations,exponents, Logarithmic problems Write a 350- to 700-word response in which you examine the importance and applicability of this concept. Describe why this concept is important and how it can be applied to society in general
*March 29, 2012 by Tiara*

**maths**

Solve this logarithmic equation. 3 log 2 base x + log 18 base x = 2
*May 8, 2013 by Shane*

**maths**

Solve this logarithmic equation. 3 log 2 base x + log 18 base x = 2
*May 8, 2013 by Shane*

**Math**

1.) Write in exponential form. log16 8=3/4 2.) Write in logarithmic form. 3^4=81
*November 3, 2014 by Patti*

**Math - Logarithmic**

Is the following correct when restating logs with variables to exponential? Log: log_a(a^3) --- base = a Exp: a^3 = a I know when dealing with real numbers, this is what you do: Log: log(10^5) Exp: 10^5 = 100 000
*December 13, 2007 by Anonymous*

**Math - Logarithmic**

Log_8 = Log with the base of 8 log_8 (x-3) - log_8 (3x+11) = log_8 [1 / (x+1)] I use the quotient law for the left side and eliminate log_8. And then what? My Work: log_8 [(x-3)/(3x+11)] = log_8 [1 / (x+1)] [(x-3)/(3x+11)] = [1 / (x+1)] Answer: 7
*December 12, 2007 by Anonymous*

**logarithmic eq:**

3logx = 6-2x Thanks This is a problem that is best solved by iteration, or graphing. I recommend graphing. There is no closed-form solution. You need to solve it by graphical or iteration (trial and error) methods. The answer is approximately 2.43, if the log base is 10.
*February 23, 2007 by Jen*

**College Algebra**

For the exponential function e^x and logarithmic function log x, graphically show the effect if x is halved. Include a table of values for all four functions. Could someone please explain to me what occurs when things are halved.
*May 14, 2009 by Carmen*

**Algebra check**

Convert to Logarithmic equations. 10. 4^-3 =1/64 I have the answer as log4 1/64 =-3 11. 144^1/2 =12 I have the answer as log 144^12 =1/2 Are these answers right?
*November 30, 2008 by Shawn*

**calculus**

really stuck on these two, steps would be greatly appreciated. gotta find the derivative thanks! first one: f(t)=2^(log5t) the 5 is the base second one: y=(2(x^2) - 1)^5 /(√(x+1) for the second one you have to use logarithmic differentiation
*October 31, 2012 by nicole*

**calculus**

solve the following logarithmic equation. Be sure to reject any value of x that is not in the domain of orginal expression. then in the solution set round to two decimals places. Inx=8 I get e^8 But am having a hard time with rounding two decimal places. Can someone help?
*January 1, 2013 by Jennifer*

**ALGEBRA**

(a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log_(8.5) \(127\) = Give a calculator approximation (correct to four decimal places). log_(8.5) \(127\) ~=
*April 16, 2012 by Randy*

**ALGEBRA**

(a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log_(8.9) \(135\) = (b) Give a calculator approximation (correct to four decimal places). log_(8.9) \(135\) ~=
*June 12, 2012 by Urgen please help*

**Algebra**

Evaluate the logarithmic function for three values of x between zero and one, three values of x greater than 1, and at x=1. Show your work. Use the resulting ordered pairs to plot the graph. State the domain and the range of the function. g(x) = ln x + 2
*June 19, 2010 by Zen*

**college algebra**

write the expression as a single logarithm 1. In(x/x*2)+In(x+2/x)-In(x^2-4) solve the following logarithmic equation. 2. log_9(x-2)+log_9(x+1)=2 what is the exact solution? What is the decimal approximation for the solution when rounded three decimal places. please show work
*November 30, 2012 by confused--two questions please help/steve please*

**algebra**

Rewrite the following as an equivalent logarithmic equation.Do not solve. y^t = x answer logy+logt=logx-is this right also Express as an equivalent expression that is a sum of logt (3ab) the t is at the bottom of the g answer log3+loga+logb logarithms.
*May 5, 2010 by dani*

**Pre-Calculus**

Find the inverse function for the function f(x)=2^(x)+1/2^(x)-1 You will need to use some properties of logarithmic functions to find the inverse of this particular function.
*April 30, 2013 by Thomas*

**math**

Which logarithmic equation is equivalent to the exponential equation below? 9^x=27 A) 27 log9 x B) x log9 27 C) 9 log27 x D) x log27 9
*December 18, 2013 by Fran*

**Trigonometry**

Express each of the following as a single logarithmic expression. All exponents must be left in radical form: 1.) 2logx-3logy 2.) logx-logy+logz 3.) 1/3log5x+2/3log6x 4.) 2/3(logbase2 x - logbase2 y) I dont understand these problems at all. Can someone please solve and explain...
*May 19, 2012 by Nabil*

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