Wednesday

April 16, 2014

April 16, 2014

Number of results: 300

**Math**

use the properties of logarithms to simplify the logarithmic expression. log10 (9/300) Please explain!!
*Tuesday, July 28, 2009 at 10:17pm by Hannah*

**Physics**

(Sound Intensity) = (Energy)/[(Area)*(Time)] It can be converted to decibels using a logarithmic formula, if that is what they want.
*Sunday, November 21, 2010 at 5:07pm by drwls*

**Math**

Please help, thank you. Write the logarithmic equation in its equivalent exponential form. log 0.000001 = –6
*Friday, July 29, 2011 at 6:30pm by Ms. Tracy*

**easyish MATH**

a trillion is a thousand billion. These numbers almost have to be drawn on a logarithmic scale
*Monday, September 19, 2011 at 8:28pm by bobpursley*

**collge calculus**

find the derivative of y=[(4^(7x))(7^(4x))]/[10^(e)] without using logarithmic differentiation!
*Wednesday, January 25, 2012 at 2:16am by Anonymous*

**Calculus Help**

Use logarithmic differentiation to find the derivative of the function. show steps please! y=(e^-xcos^2(x))/(x^2+x+1)
*Sunday, March 16, 2014 at 4:12pm by Tim*

**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?
*Saturday, October 28, 2006 at 5:42pm by James*

**college**

I'm dealing with logarithmic- need help with some questions please- evaluate log12 782 to three decimals
*Saturday, December 5, 2009 at 2:28pm by gigi*

**Surds please help!**

(square root of a + 3 square root of b /a - b) - (2/square root of a + square root of b).
*Thursday, March 6, 2014 at 3:17am by Jnr John*

**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= ?
*Tuesday, January 1, 2013 at 10:18am 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)
*Tuesday, March 18, 2014 at 10:47pm by Maho*

**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...
*Tuesday, December 11, 2012 at 5:51pm by Sarah*

**Logarithmic Function**

You continue to approach the station and brake after your sequence begins at 10 km. The craft does not stop until d = 0
*Sunday, May 17, 2009 at 8:37pm by Damon*

**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.
*Wednesday, March 3, 2010 at 12:42pm by jh*

**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.
*Saturday, April 20, 2013 at 9:39pm 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.
*Sunday, April 21, 2013 at 10:55am by Sean*

**algebra**

Your question is much too vague. Are you suggesting the relation is linear? or exponential? or logarithmic? You only have 2 ordered pairs, and then are trying to extrapolate.
*Monday, May 12, 2008 at 10:43pm by Reiny*

**math**

rewrite as logarithmic equation 3^-3 = 1/27 would it be log -3 27 = 3?
*Sunday, July 4, 2010 at 6:32pm by Hannah*

**math;SOS**

solve the logarithmic equation. log(5x+7)=1+log(x-9)
*Sunday, December 2, 2012 at 8:53pm by kristina*

**math**

Give an example of a logarithmic equation that cannot be solved and explain why it cannot be solved.
*Monday, March 18, 2013 at 8:01pm by Hasane*

**Algebra**

Solve the logarithmic equation. log2(4x)-log2(x+3)=1
*Friday, July 29, 2011 at 7:32pm by Meghan*

**math**

solve the logarithmic equation. log(5x+7)=1+log(x-9)
*Sunday, December 2, 2012 at 6:23pm by brad*

**Math- Alg 2**

Which logarithmic equation is equivalent to the exponential equation below? 3^x=28
*Friday, January 27, 2012 at 12:44am by CAMILA*

**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
*Saturday, February 11, 2012 at 1:25pm by Charles*

**math**

Give an example of a logarithmic equation that cannot be solved and explain why it cannot be solved. (3 marks)
*Sunday, March 17, 2013 at 11:04pm by Jonathan*

**prcalculus**

change the logarithmic expression to an equivalent expression involving an exponent. log416=x
*Sunday, March 24, 2013 at 9:20pm by deanne*

**math**

what is the solution for the logarithmic equation log2(x2+2x-44)=2? x2=x squared
*Tuesday, December 4, 2007 at 9:18pm by sophea*

**Math**

Solve the logarithmic equation. Please show all of your work. Loga(x+4) + loga(x-4) = 4
*Wednesday, June 8, 2011 at 11:23pm by Bethany*

**Math**

Solve the logarithmic equation for x. Log3(x^2 − 5x − 9) = 3 I Have no idea
*Tuesday, November 22, 2011 at 12:12pm by Anonymous*

**Algebra- IS this right?**

Evaluate The Logarithmic Equation For 3 Values Of X Greater Than -1 3 Between -2&-1 &x=-1 Y = Ln(x + 2) Y = Ln(x + 2) ,x=3,y=1.6,1.6>-1. X=-1,y=0.
*Sunday, May 9, 2010 at 11:12pm by Dani*

**Calculus AP **

5.2 The Natural logarithmic function Differentiate the function problem # 13: f(x)= sqrt(x) Inx
*Wednesday, April 18, 2012 at 11:57pm by jackie*

**college algebra**

Solve the logarithmic equation. Log x +log2x = 4 Wouldn't this be no solution because log x is undefined?
*Wednesday, April 24, 2013 at 3:49pm by Deb*

**college algebra **

solve the logarithmic equation. Please show all work. log5x+log5(x-3)=log5(x+5)
*Sunday, March 4, 2012 at 4:33pm by Tammy*

**college algebra, Please help!!**

solve the following logarithmic equation 2log2(lower than g)^(x-2)+log2^2=3 x=?
*Tuesday, November 27, 2012 at 11:00pm by ladybug,I need help please. *

**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.
*Friday, July 29, 2011 at 6:38pm by Ms. Tracy*

**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
*Monday, December 5, 2011 at 2:01pm by Alexander*

**algebra**

express as an equivalant expression that is a single logarithmic and simplfy if poissible loga(2x+10)-loga(x^2-25)
*Friday, June 3, 2011 at 11:09pm by mema*

**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
*Monday, November 21, 2011 at 12:33pm 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
*Monday, November 21, 2011 at 5:05pm 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.**
*Thursday, January 3, 2013 at 10:32pm by Heather*

**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.!
*Saturday, April 20, 2013 at 9:45pm by Sean*

**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?
*Saturday, May 8, 2010 at 3:41pm by dani*

**pre-calculus**

Change the logarithmic expression to an equivalent expression involving an exponent. Log7343=x the 7 should drop down lower than the 343.
*Tuesday, October 9, 2012 at 5:06pm by ladybug*

**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)=
*Tuesday, October 30, 2012 at 10:06pm 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
*Sunday, April 21, 2013 at 10:57am by Sean*

**Calculus**

For logarithmic expression, the value of u in ln u should be more than 0. So: (13x + 6)/(5 - 17x) > 0 Use the number line to solve this, you'll get the result. If my calculations are correct, then: (-6/13,5/17)
*Thursday, March 3, 2011 at 10:28pm by agrin04*

**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
*Tuesday, October 9, 2012 at 9:47pm 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
*Sunday, April 7, 2013 at 10:17pm by Julia*

**precalculus**

solve the logarithmic equation . express solution in exact form log5(x-9)+log5(x+4)=1+log5(x-5)
*Friday, November 11, 2011 at 12:00pm by mz deedee*

**precalculus**

solve logarithmic equation in exact form only. show work. log_5(x-3)+ log_5(x-6)-log_5(x+1)=2
*Sunday, January 15, 2012 at 1:22pm by Sara*

**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.
*Monday, February 16, 2009 at 3:04pm by Mario*

**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???
*Tuesday, November 27, 2012 at 10:29pm 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
*Tuesday, January 1, 2013 at 9:02pm by phyllys*

**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)
*Thursday, June 9, 2011 at 7:33pm by Allison - Carson*

**algebra**

change the logarithmic expression to an equivalent expression involving an exponent. 4^16=x log (base4)16=x is it x=e^2?
*Sunday, September 2, 2012 at 5:50pm 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?
*Sunday, September 2, 2012 at 9:52pm by alli*

**Math - Logarithmic**

log_3(x^2/(x-2)) = 2 nothing changed on the right x^2/(x-2) = 3^2 = 9 x^2 = 9x - 18 x^2 -9x + 18 = 0 (x-3)(x-6) = 0 for once I agree with your book, 3 or 6
*Wednesday, December 12, 2007 at 9:37pm by Damon*

**Logarithmic Scales**

In 1995, Japan had an earthquake of magnitude 7.2. What is the magnitude of an earthquake that is twice as intense?
*Wednesday, March 28, 2012 at 11:26pm by Anonymous*

**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
*Saturday, June 12, 2010 at 4:50pm by J. Ed*

**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
*Sunday, June 13, 2010 at 5:51pm by Tom Allison*

**logarithmic functions**

okay. how would you solve: 2log(subscript6)(4) - (1/3)log(sub6)(8) = log(sub6)(x)
*Thursday, April 7, 2011 at 12:02am by Haley*

**College Algebra**

Solve the logarithmic equation for x. log(base 3)(x+6) - log(base 3)(x+1)=1 urgent! help!
*Tuesday, December 4, 2012 at 9:38pm by Patrick:)*

**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
*Monday, March 19, 2012 at 4:17am by mark*

**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 =
*Wednesday, April 25, 2012 at 8:39pm by Randy*

**maths**

Solve this logarithmic equation. 3 log 2 base x + log 18 base x = 2
*Wednesday, May 8, 2013 at 7:29am by Shane*

**maths**

Solve this logarithmic equation. 3 log 2 base x + log 18 base x = 2
*Wednesday, May 8, 2013 at 7:30am by Shane*

**Surds please help!**

(√a + 3√b)/(a-b) - 2/(√a+√b) Note that (√a-√b)(√a+√b) = a-b, so (√a + 3√b)/(a-b) - 2/(√a+√b) * (√a-√b)/(√a-√b) (√a+3√b)/(a-b) - 2(√a-√b)/(a-b) (√a+3&#...
*Thursday, March 6, 2014 at 3:17am by Steve*

**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
*Monday, January 7, 2013 at 11:05pm by Heather*

**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.
*Friday, April 18, 2008 at 1:11pm by JaneLee*

**logarithmic differentiation**

Do you want the derivative of that? Does the "fourth root" apply to the numerator only, or the complete fraction (x^2+1)/(x^2-1) ? You need to write the function in a clear nonambiguous manner, using parentheses where necessary. Use ^1/4 for fourth roots.
*Monday, May 14, 2012 at 4:15pm by drwls*

**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
*Wednesday, January 9, 2013 at 7:24am by Roger*

**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
*Wednesday, January 18, 2012 at 3:00am by Jo *

**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.
*Saturday, April 30, 2011 at 3:49pm by Hannah*

**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...
*Sunday, June 13, 2010 at 8:53pm 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
*Thursday, March 29, 2012 at 9:02pm by Tiara*

**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.
*Thursday, May 14, 2009 at 9:14pm by Carmen*

**Physics**

Of course it does not work. dB has a special logarithmic meaning, and you need to apply that. Each doubling of the the distance changes the intensity 6db, so you want to have a change of 35db, so your answer ought to be near 6 doublings 10,20, 40, 80, 160, etc. Use the log ...
*Wednesday, October 22, 2008 at 12:08am by bobpursley*

**Applied Calculus**

Thanks to both of you, I won't forget how to do this next time! It makes much more sense now, and will be even easier on basic functions versus logarithmic/exponential functions. I think it was the natural log that tripped me a little bit there, but thank you for the ...
*Friday, April 12, 2013 at 2:47pm by Jacob*

**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
*Wednesday, November 10, 2010 at 5:03pm by Ash*

**Math - Logarithmic**

multiply both sides by (3x+11)(x+1) (x-3)(x+1) = 3x+11 x^2 - 2x - 3 = 3x + 11 x^2 - 5x -14 = 0 (x-7)(x+2) = 0 ok?
*Wednesday, December 12, 2007 at 7:21pm by Damon*

**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?
*Tuesday, May 18, 2010 at 4:05pm by Anonymous*

**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
*Friday, October 29, 2010 at 6:53pm by Adam*

**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
*Wednesday, October 31, 2012 at 11:38am by nicole*

**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?
*Thursday, January 10, 2008 at 2:41pm by mathstudent*

**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?
*Tuesday, January 1, 2013 at 2:46am by Jennifer*

**Pre-calc Solve logarithmic**

Not even close. ln√(x-8) = 5 1/2 ln(x-8) = 5 ln(x-8) = 10 x-8 = e^10 x = 8+e^10
*Wednesday, October 30, 2013 at 9:46pm by Steve*

**Logarithmic Function help**

What you have so far is correct. you would end up with x = ln(7/5)/.2 which is the same as their answer. You just have a different form. notice you are dividing by .2 or 1/5 and isn't division by 1/5 the same as multiplying by 5? there you go! ln(7/5)/.2 = 5ln(7/5)
*Sunday, June 7, 2009 at 1:48pm by Reiny*

**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.
*Friday, February 23, 2007 at 8:47am by Jen*

**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.
*Tuesday, April 30, 2013 at 2:12pm by Thomas*

**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) \(127\) ~=
*Monday, April 16, 2012 at 10:58am by Randy*

**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
*Thursday, December 13, 2007 at 7:20pm by Anonymous*

**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.
*Wednesday, May 5, 2010 at 2:13am by dani*

**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
*Saturday, June 19, 2010 at 9:19am by Zen*

**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) \(135\) ~=
*Tuesday, June 12, 2012 at 5:02pm by Urgen please help*

**algebra**

Evaluate the logarithmic equation for three values of x that are greater than 2, three values of x that are between 1 and 2, and at x=2. y = -log(sub)3 (x - 1) I don't know if I did this right, I changed it to -3^y=x-1. I am having difficulty replacing x and finding out what y...
*Sunday, May 9, 2010 at 6:06pm by Celest*

**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...
*Saturday, May 19, 2012 at 11:00am by Nabil*

**Calculus - Integrals**

arccot is simply related to arctan: arccot(x) = pi/2 - arctan(x) You can integrate arctan using partial integration. You get x arctan(x) - integral of xdx/(x^2+1), the latter integrand contans in the denominater the derivative of the numerator (up to a factor 2), so you get a ...
*Thursday, March 13, 2008 at 9:43pm by Count Iblis*

**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. Use the resulting ordered pairs to plot the graph State the equation of the line asymptotic to the graph (if any). y = (1/4...
*Monday, September 6, 2010 at 3:56am by Nicole*

**logarithmic differentiation**

y = [(x^2 + 1)(x^2-1) ]^(1/4) = (x^4 - 1)^(1/4) ln y = (1/4) ln(x^4 -1) (dy/dx) / y = (1/4)(4x^3)/(x^4 - 1) dy/dx = (1/4)(y)(4x^3)/(x^4 - 1) or you can replace y with (x^4 - 1)^(1/4) and simplify that a bit since the denominator is x^4 - 1
*Monday, May 14, 2012 at 4:15pm by Reiny*

**logarithmic functions**

so the coefficient of a log function are the same as writing it as an exponent of x in the equation: log(subb)x = y ? therefore, Clog(subb)x = y is the same as log(subb)x^(C) = y ?
*Thursday, April 7, 2011 at 12:02am by Haley*

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