Best Answer

A logarithm is quite the opposite of an exponential function.

Whereas an exponential is y=ax , a log is logay=x

For example, log39=2 because you raise 3 by the 2nd power to get 9. In other words, log39=2 because 32=9

Logarithms are present because they are a handy way to solve exponential equations, and because calculators use them to great advantage.

More answers

Pretty much, yeah. It's just another way of expressing exponents.

Say you know the following: (we'll start off easily)

16 = 42

You could also write that as:

log4 16 = 2

Algebraically,

a = bc

so,

logb a = c (b is known as the base, so it is read: log base b of a equals c)

Also, logb a = (log a) / (log b)

A logarithm is the inverse of exponentiation; that is, the log of a number is the exponent to which its base is raised to produce that number. For example common logarithms have base 10; the value N of the log of a number x is found as 10 to the N exponent equals x. For example the log 20 = N; 10 to the N exponent = 20; N = 1.301

Yes, sort of. Asking for the logarithm is equivalent to asking for an unknown exponent. Using the common (base-10) logarithms:Let's assume that somebody asks for log(10) 1000. (The 10 is supposed to be in subscript.)

This is equivalent to asking to complete for "x" in the following equation:

10 to the power x = 1000

(In this case, the answer is 3.)

Q: A logarithm is an exponent

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

The main use for a logarithm is to find an exponent. If N = a^x Then if we are told to find that exponent of the base (b) that will equal that value of N then the notation is: log N ....b And the result is x = log N ..........b Such that b^x = N N is often just called the "Number", but it is the actuall value of the indicated power. b is the base (of the indicated power), and x is the exponent (of the indicated power). We see that the main use of a logarithm function is to find an exponent. The main use for the antilog function is to find the value of N given the base (b) and the exponent (x)

The logarithm of a number is the exponent to which another fixed value, the base, must be raised to produce that number. THere are seven main applications that logarithms are used for including psychology, computational complexity, fractals, music, and number theory.

Not necessarily. Negatives are called opposites, or additive inverses. Inverses is much more general. For example, the inverse of an exponent is a logarithm.

The inverse of the logarithm of a number is ten to the number, meaning that the number is the exponent. In this case, 10^-3.1 equals approximately .0007943.

y=1+log2x implies -1=log2x which can be solved by raising both sides as an exponent of 2 (since the logarithm is base 2). 2-1=2log2x This finally implies: 1/2=x For explanations of why this is: Anything to a negative exponent simply equals that thing to the positive of that exponent under 1 5-1=1/51=1/5 x-2=1/x2 2-3=1/23=1/8 and so 2-1=1/2 Any number raised to a logarithm of the same base as itself will equal the number inside the logarithm. 5log520=20 xlogx2y=2y eln 7=7 and so 2log2x=x

Related questions

No.

The inverse function of the exponential is the logarithm.

if y = xa then a = logxy

Most likely it is a logarithm.

A logarithm is the exponent to which a number called a base is raised to become a different specific number. A common logarithm uses 10 as the base and a natural logarithm uses the number e (approximately 2.71828) as the base.

The main use for a logarithm is to find an exponent. If N = a^x Then if we are told to find that exponent of the base (b) that will equal that value of N then the notation is: log N ....b And the result is x = log N ..........b Such that b^x = N N is often just called the "Number", but it is the actuall value of the indicated power. b is the base (of the indicated power), and x is the exponent (of the indicated power). We see that the main use of a logarithm function is to find an exponent. The main use for the antilog function is to find the value of N given the base (b) and the exponent (x)

Log of 1, Log Equaling 1; Log as Inverse; What's βlnβ? ... The logarithm is the exponent, and the antilogarithm raises the base to that exponent. ... read that as βthe logarithm of x in base b is the exponent you put on b to get x as a result.β ... In fact, when you divide two logs to the same base, you're working the ...

A number for which a given logarithm stands is the result that the logarithm function yields when applied to a specific base and value. For example, in the equation log(base 2) 8 = 3, the number for which the logarithm stands is 8.

MAYBE LOGARITHM!!! Anyway, this can be true if you compare like this: 2^ 1 + 2^ 1= log2=4

type Log and then 5600 in your graphing calculator. Basically you are finding an exponent that is for base 10. so 10^x=5600.

The logarithm of a number is the exponent to which another fixed value, the base, must be raised to produce that number. THere are seven main applications that logarithms are used for including psychology, computational complexity, fractals, music, and number theory.

Not necessarily. Negatives are called opposites, or additive inverses. Inverses is much more general. For example, the inverse of an exponent is a logarithm.