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Whats The Difference Between A Natural Logarithm And A Regular One

What is the difference between a logarithm and a natural logarithm?

The difference is the base in "regular" logs the base is 10 in natural logs the base is e = 2.7183...
think of it this way, the log(base 10) 100 = 2 because 10^2 = 100
the ln (nat log) of 100 is x such that e^x = 100
It follows that you could define a log in any base
i.e. log(base 2) of 8 is 3; hence 2^3 = 8
Make any sense?

What is the difference between Common and Natural logarithms?

By definition, a natural logarithm is one with base e. It is usually denoted as ln.

y = ln(x) is the same as saying x = e^y.

I'm not entirely sure what a "common" logarithm is, but if it is what I think it is, it is base 10 and usually does not have a subscript.

y = log(x) is the same as x = 10^y

What is the difference between a logarithm and a natural logarithm?

Logarithms are the inverse functions associated with exponential functions. Notice the plural. There are many different types of exponential functions, and there are just as many corresponding logarithms.For example [math]f(x) = 3^x[/math] is an exponential function, it’s inverse is the base 3 log[math]f^{-1}[/math][math](x) = \log_3(x)[/math]The log base 3 function returns the value that you need to raise 3 to in order to get [math]x[/math].There are some special exponential functions and logarithms though.The standard exponential function, aka THE exponential function is[math]\exp(x) = e^x[/math]This function has the nice property of being it’s own derivative. It’s rate of growth is equal to how much it has. It’s corresponding logarithm is called the natural logarithm [math]\ln(x) = \log_{e}(x)[/math].Another useful exponential function is the one that lines up with our decimal system[math]\exp_{10}(x) = 10^x[/math]Along with the ‘common’ logarithm [math]\log_{10}(x)[/math]It turns out you only need one exponential function and one logarithm since we can convert between them.[math]a^x = e^{ln(a) x}, \log_{b}(x) = \frac{\ln(x)}{\ln(b)}[/math]

Why can one interchange the limit and the natural logarithm?

For this question I've tried the notation as used on Wikipedia, but it was truncated and not executed. So I'll try to write it down in an understandable form.

Part of the proof that if

f(x) = ln x

then

f'(x) = 1/x

is that through using the fact that the function is continuous, we may
interchange the limit and the natural logarithm, like this:

lim(h-->0) ln (1 + h/x)^(1/h)

can be made into

ln {lim(h-->0) (1 + h/x)^(1/h)}


Can anyone explain why this is? My daughter understands every element of the proof except this transition, and couldn't find any explanation for it.
My own math is *very* rusty, so I tried my old books, only to find that also there the rule was used, but not explained.

Any help is greatly appreciated.

What is the difference between natural log, common log and antilog?

Logarithm is just another word for power.Log b (x) = y , where b is baseExample :- Log10(100) = 2 , means 10^2 = 100It means Log tell us about the power of base that if that power is raised to the base then we get our number (x) back.LOG ONLY TELL US ABOUT THE POWER OF BASE BUT ANTILOG APPLY THAT POWER TO THE BASE TO GET THE NUMBER (X) BACKLOG 10 ( 100 ) = 2 , LOG ONLY TELL POWERANTILOG (2) = 100 , ANTILOG APPLY THAT POWER 10^2 = 100**AND THAT'S WHY SCIENTIFIC CALCULATOR DOESN'T CONTAIN ANY OPTION TO FIND OUT ANTILOG BECAUSE ANTILOGARITHM IS JUST AN EXPONENT POWER CONCEPT , SO YOU ONLY HAVE TO SELECT THE OPTION X^Y ON YOUR CALCULATOR AND THEN JUST PUT X = 10 AND Y= THAT NO. TO WHICH YOU WANT TO FIND OUT ANTILOG.**Now there are mainly two types of LogCommon log with base 10Natural Log with base e , which is Euler's (Oiler) Number having value :- 2.718And here is the conversion FormulaLog e (x) = 2.303 Log 10 (x)Proof of Above formula is given in the video****IT IS NOT POSSIBLE FOR ME TO TELL HERE ABOUT FULL PROCEDURE TO FIND OUT LOG AND ANTILOG , CHANGE OF BASE , USE OF LOG TABLE , ANTILOG OF NEGATIVE NUMBER****HERE I AM ATTACHING MY VIDEO LINK IN . IN THIS VIDEO YOU WILL GET FULL INFORMATION ABOUT LOG ANTILOG.

What is the difference between natural log and log base 2?

Natural logs are different than common logarithms .The base of a natural logarithm is the special number “e” and it is a irrational number that is equivalent to 2.718182845.logarithms to base 10 are called common logarithms.Anither important base e to logarithms are called natural log.Examples1.common logarithmsLog y=xy=10^x2.natural logarithmsIn y=Xy=e^x3.log base 2In binary logarithms the base 2 is the power to which the number 2 must be rised to obtain the value n .The binary logarithm function is the inverse function of the power of two function.Properties:Log 2(xy)= log2(x)+log2(y)Log2(x/y)=log2(x)-log2(y)Log2(x^y)=ylog2(x).

How can you describe the difference between a natural and a common log?

Base of a common logarithm is 10 whereas base of natural logarithm is Euler's number [math]e[/math].Common Log:[math]log_{10}(x)=y[/math]Exponent form:[math]10^{x}=y[/math]Interrogative statement form:"At which number should we raise 10 to get y?"Natural Log:[math]log_{e}(x)=y[/math]Exponent form:[math]e^{x}=y[/math]Interrogative statement form:"At which number should we raise Euler's constant number do get y?"

The Common and Natural Logarithms?

1. 3
2. undefined
3. exp(-2.7)
4. 2

Common logarithms and natural logarithms?

These days you usually find logs by entering the number into your calculator, and letting it do the work. Before those days, you typically looked up the answers in a log table. Log tables only gave you the values of various values between 0 and 1. But that's really all you needed. Pretending that you had a log table, here's what you'd do:

a) log (13) = log (10*1.3) = log (10) + log (1.3) = 1 + log(1.3). Look up log (1.3), which is about 0.11384, and add it to to 1.

b) log (93,100) = log(9.31 * 10^4) = log(10^4) + log(9.31) = 4 + log(9.31). Look up the log and add it to 4. It's about 4.96895.

c) Again, you could just use a modern scientific calculator to enter 50 and press your "Ln" button. But if a standard log table was all you had, you could use the base rule for logs and do this:
Ln(50) = log(50) / log(e). Then just calculate log 50 and log (2.71828...) with the table, and divide.

d) If you're asking for Ln(e^17.814), that would just be 17.814. Remember logs mean "What power of the base will give me this number?"

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