99 Answered Questions for the topic Logarithmic functions

Logarithmic Functions

04/13/15

2log3x-log3(x+4)=2
2log3x−log3(x+4)=2If the answer is not an integer, enter it as a decimal. Round to the nearest hundredth, if needed. If there are multiple solutions, separate the answers with semicolons (;).
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Logarithmic Functions

04/08/15

Use a calculator to evaluate (log 7)÷ (ln 6).
Use a calculator to evaluate (log 7)÷ (ln 6).
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Logarithmic Functions

04/08/15

Find the value of log5v1.
Find the value of log5√1.
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Logarithmic Functions

04/08/15

Write log34916=2in exponential form.
Write log34916=2in exponential form.
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Logarithmic Functions

04/08/15

Evaluate lne6without using a calculator.
Evaluate lne6without using a calculator.
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Logarithmic Functions

04/08/15

Use a calculator to evaluate (log 5)× (ln 12).
Use a calculator to evaluate (log 5)× (ln 12).
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Logarithmic Functions

04/08/15

Find the magnitude of an earthquake with intensity 52,000,000I0.
The Richter scale magnitude Rof an earthquake of intensity Iis defined as R=log(II0),where I0is a small threshold intensity. Find the magnitude of an earthquake with intensity 52,000,000I0.
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Logarithmic Functions Calculus Precalculus Solve Equation

04/03/15

Solve the logarithmic equation:
Solve the logarithmic equation:   log2(x - 1) - log2(x - 3) = log2(2x + 1) - log2(x + 3)
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Logarithmic Functions

01/28/15

(2e^8.7n+1)-1= 25
2e8.7n+1-1= 45    Please help.  I do not understand how to solve.    TY 
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01/19/15

I don't know how to solve this? Am I suppose to use a specific formula?
Shelby is canoeing in a river. She travels 4 miles upstream and 4 miles downstream in a total of 5 hours. In still water, Shelby can travel at an average speed of 2 miles per hour. To the nearest... more
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Logarithmic Functions Logarithms

01/16/15

3^2x-5(3^x)=-6
Using logarithms solve.
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01/13/15

Any ideas on how to do this?
During the period between 2001-2011, the average price of an ounce of gold doubled every 4 years. In 2001, the average price of gold was about $270 per ounce.   Year      Average Price of an... more
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Logarithmic Functions Logarithms Exponential Functions

01/06/15

exponential decay and logarithm
The inverse of exponential growth function y=a^x is the logarithmic function y=log_a(x). But is there an inverse for a decay exponential function y=a^(-x)? and how its graph would be?
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Logarithmic Functions Precalculus

12/18/14

Write the expression as a single logarithm
-2/3log5(5m2)+1/2log5(25m2)   (Give the answer in the form log5Ar, Where A is a rational expression in m and r is a rational number)
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Logarithmic Functions Precalculus Real Numbers

12/11/14

Logarithmic function, all real numbers.
Suppose f(x) is a function defined on all real numbers and that logbf(x)=3x. What is f(x) written explicitly? f(x)=b3x What is f(logbx)?  
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Logarithmic Functions Real Numbers

12/08/14

Find a function defined on all real numbers
Suppose f(x) is a function defined on all real numbers and that logbf(x)=3x. What is f(x) written explicitly?
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Logarithmic Functions

12/02/14

lnx + ln(x-4) = ln5
what is the answer to the question:   lnx =+ ln(x-4) = ln5
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Logarithmic Functions

11/08/14

How many kilowatt-hours of energy would an earthquake have to release in order to be an 8.5 on the Richter scale?
The Richter scale is used for magnitude of an earthquake.  The Richter magnitude is given by R=0.67log(0.37E)+1.46 where E is he energy in kilowatt hours released by the earthquake.  How many... more
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Logarithmic Functions Logarithms Differentiation

11/05/14

how do I solve for x in the equation: 2/3 = ln2x
please show working and also explain why you do it how you do it. Thanks! :)
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Logarithmic Functions

09/28/14

- log x= -1.8140, x=?
how can i calculate x in this question?
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Logarithmic Functions Algebra 2 Graphing Logarithms

06/05/14

how do you graph and solve logarithmic and exponential equations
Solving   3e^(-2x)=12   2^(x+1)+3=9   2+ln(x+3)=13   Graphing   2+log2(x+1)   -log1/2x   -2+ln (x-3)   2^(x+1)-3   log2(x+2)+4  
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Logarithmic Functions Functions Math Help Logarithms

04/13/14

Logarithms Function*
This question is really confusing me:   If f(x) = 3x-2, Find f(log3a) for a>0   Step-By-Step would be greatly appreciated!
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Logarithmic Functions Logarithms Pre Calculus Vertical Shifts

03/18/14

Vertical shifts
graph y=logx, y=log(10x), and y=log(100x). how do the graphs compare? use a property of logs to show that the graphs are vertical shifts of one another. 
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Logarithmic Functions Algebra Simplify Logarithms

12/07/13

Use the properties of logarithms to write the expression as a single logarithm:
7 ln x - 1/4 ln y   I would be very grateful for some help! Thanks for reading!
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