Log calculator finds the logarithm function result (can be called exponent) from the given base number and a real number.
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Logarithm
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Logarithm is considered to be one of the basic concepts in mathematics.There are plenty of definitions, starting from really complicated and ending up with rather simple ones.In order to answer a question, what a logarithm is, let's take a look at the table below:
| 21 | 22 | 23 | 24 | 25 | 26 |
| 2 | 4 | 8 | 16 | 32 | 64 |
Movist pro 2 2 0 0. This is the table in which we can see the values of two squared, two cubed, and so on.This is an operation in mathematics, known as exponentiation.If we look at the numbers at the bottom line, we can try to find the power value to which 2 must be raised to get this number.For example, to get 16, it is necessary to raise two to the fourth power.And to get a 64, you need to raise two to the sixth power.
Therefore, logarithm is the exponent to which it is necessary to raise a fixed number (which is called the base), to get the number y.In other words, a logarithm can be represented as the following:
logb x = y
with b being the base, x being a real number, and y being an exponent.
For example, 23 = 8 ⇒ log2 8 = 3 (the logarithm of 8 to base 2 is equal to 3, because 23 = 8).
Similarly, log2 64 = 6, because 26 = 64. Silverlite software.
Therefore, it is obvious that logarithm operation is an inverse one to exponentiation.
| 21 | 22 | 23 | 24 | 25 | 26 |
| 2 | 4 | 8 | 16 | 32 | 64 |
| log22 = 1 | log24 = 2 | log28 = 3 | log216 = 4 | log232 = 5 | log264 = 6 |
Unfortunately, not all logarithms can be calculated that easily.For example, finding log2 5 is hardly possible by just using our simple calculation abilities.After using logarithm calculator, we can find out that
log2 5 = 2,32192809 Scrutiny 7 5 3 download free.
There are a few specific types of logarithms.For example, the logarithm to base 2 is known as the binary logarithm,and it is widely used in computer science and programming languages.The logarithm to base 10 is usually referred to as the common logarithm,and it has a huge number of applications in engineering, scientific research, technology, etc.Finally, so called natural logarithm uses the number e (which is approximately equal to 2.71828) as its base,and this kind of logarithm has a great importance in mathematics, physics,and other precise sciences.
The logarithmlogb(x) = y is read as log base b of x is equals to y.
Please note that the base of log number b must be greater than 0 and must not be equal to 1.And the number (x) which we are calculating log base of (b) must be a positive real number.
For example log 2 of 8 is equal to 3.
Common Values for Log Base
| Log Base | Log Name | Notation | Log Example |
|---|---|---|---|
| 2 | binary logarithm | lb(x) | log2(16) = lb(16) = 4 => 24 = 16 |
| 10 | common logarithm | lg(x) | log10(1000) = lg(1000) = 3 => 103 = 1000 |
| e | natural logarithm | ln(x) | loge(8) = ln(8) = 2.0794 => e2.0794 = 8 |
Logarithmic Identities
List of logarithmic identites, formulas and log examples in logarithm form. Tidy up 4 1 9 download free.
Logarithm of a Quotient
Change of Base
- ln(2) = loge(2) = 0.6931
- ln(3) = loge(3) = 1.0986
- ln(4) = loge(4) = 1.3862
- ln(5) = loge(5) = 1.609
- ln(6) = loge(6) = 1.7917
- ln(10) = loge(10) = 2.3025
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Logarithm Values Tables
List of log function values tables in common base numbers.
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| log2(x) | Notation | Value |
|---|---|---|
| log2(1) | lb(1) | 0 |
| log2(2) | lb(2) | 1 |
| log2(3) | lb(3) | 1.584963 |
| log2(4) | lb(4) | 2 |
| log2(5) | lb(5) | 2.321928 |
| log2(6) | lb(6) | 2.584963 |
| log2(7) | lb(7) | 2.807355 |
| log2(8) | lb(8) | 3 |
| log2(9) | lb(9) | 3.169925 |
| log2(10) | lb(10) | 3.321928 |
| log2(11) | lb(11) | 3.459432 |
| log2(12) | lb(12) | 3.584963 |
| log2(13) | lb(13) | 3.70044 |
| log2(14) | lb(14) | 3.807355 |
| log2(15) | lb(15) | 3.906891 |
| log2(16) | lb(16) | 4 |
| log2(17) | lb(17) | 4.087463 |
| log2(18) | lb(18) | 4.169925 |
| log2(19) | lb(19) | 4.247928 |
| log2(20) | lb(20) | 4.321928 |
| log2(21) | lb(21) | 4.392317 |
| log2(22) | lb(22) | 4.459432 |
| log2(23) | lb(23) | 4.523562 |
| log2(24) | lb(24) | 4.584963 |
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| log10(x) | Notation | Value |
|---|---|---|
| log10(1) | log(1) | 0 |
| log10(2) | log(2) | 0.30103 |
| log10(3) | log(3) | 0.477121 |
| log10(4) | log(4) | 0.60206 |
| log10(5) | log(5) | 0.69897 |
| log10(6) | log(6) | 0.778151 |
| log10(7) | log(7) | 0.845098 |
| log10(8) | log(8) | 0.90309 |
| log10(9) | log(9) | 0.954243 |
| log10(10) | log(10) | 1 |
| log10(11) | log(11) | 1.041393 |
| log10(12) | log(12) | 1.079181 |
| log10(13) | log(13) | 1.113943 |
| log10(14) | log(14) | 1.146128 |
| log10(15) | log(15) | 1.176091 |
| log10(16) | log(16) | 1.20412 |
| log10(17) | log(17) | 1.230449 |
| log10(18) | log(18) | 1.255273 |
| log10(19) | log(19) | 1.278754 |
| log10(20) | log(20) | 1.30103 |
| log10(21) | log(21) | 1.322219 |
| log10(22) | log(22) | 1.342423 |
| log10(23) | log(23) | 1.361728 |
| log10(24) | log(24) | 1.380211 |
| loge(x) | Notation | Value |
|---|---|---|
| loge(1) | ln(1) | 0 |
| loge(2) | ln(2) | 0.693147 |
| loge(3) | ln(3) | 1.098612 |
| loge(4) | ln(4) | 1.386294 |
| loge(5) | ln(5) | 1.609438 |
| loge(6) | ln(6) | 1.791759 |
| loge(7) | ln(7) | 1.94591 |
| loge(8) | ln(8) | 2.079442 |
| loge(9) | ln(9) | 2.197225 |
| loge(10) | ln(10) | 2.302585 |
| loge(11) | ln(11) | 2.397895 |
| loge(12) | ln(12) | 2.484907 |
| loge(13) | ln(13) | 2.564949 |
| loge(14) | ln(14) | 2.639057 |
| loge(15) | ln(15) | 2.70805 |
| loge(16) | ln(16) | 2.772589 |
| loge(17) | ln(17) | 2.833213 |
| loge(18) | ln(18) | 2.890372 |
| loge(19) | ln(19) | 2.944439 |
| loge(20) | ln(20) | 2.995732 |
| loge(21) | ln(21) | 3.044522 |
| loge(22) | ln(22) | 3.091042 |
| loge(23) | ln(23) | 3.135494 |
| loge(24) | ln(24) | 3.178054 |
Learn how to use the Algebra Calculator to check your answers to algebra problems.
Example Problem
Solve 2x+3=15.Check Answer
x=6How to Check Your Answer with Algebra Calculator
First go to the Algebra Calculator main page.
Type the following:
- First type the equation 2x+3=15.
- Then type the @ symbol.
- Then type x=6.
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2x+3=15 @ x=6Clickable Demo
Try entering 2x+3=15 @ x=6 into the text box.After you enter the expression, Algebra Calculator will plug x=6 in for the equation 2x+3=15: 2(6)+3 = 15.
| loge(x) | Notation | Value |
|---|---|---|
| loge(1) | ln(1) | 0 |
| loge(2) | ln(2) | 0.693147 |
| loge(3) | ln(3) | 1.098612 |
| loge(4) | ln(4) | 1.386294 |
| loge(5) | ln(5) | 1.609438 |
| loge(6) | ln(6) | 1.791759 |
| loge(7) | ln(7) | 1.94591 |
| loge(8) | ln(8) | 2.079442 |
| loge(9) | ln(9) | 2.197225 |
| loge(10) | ln(10) | 2.302585 |
| loge(11) | ln(11) | 2.397895 |
| loge(12) | ln(12) | 2.484907 |
| loge(13) | ln(13) | 2.564949 |
| loge(14) | ln(14) | 2.639057 |
| loge(15) | ln(15) | 2.70805 |
| loge(16) | ln(16) | 2.772589 |
| loge(17) | ln(17) | 2.833213 |
| loge(18) | ln(18) | 2.890372 |
| loge(19) | ln(19) | 2.944439 |
| loge(20) | ln(20) | 2.995732 |
| loge(21) | ln(21) | 3.044522 |
| loge(22) | ln(22) | 3.091042 |
| loge(23) | ln(23) | 3.135494 |
| loge(24) | ln(24) | 3.178054 |
Learn how to use the Algebra Calculator to check your answers to algebra problems.
Example Problem
Solve 2x+3=15.Check Answer
x=6How to Check Your Answer with Algebra Calculator
First go to the Algebra Calculator main page.
Type the following:
- First type the equation 2x+3=15.
- Then type the @ symbol.
- Then type x=6.
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Try it now:6 Feet 5 Inches
2x+3=15 @ x=6Clickable Demo
Try entering 2x+3=15 @ x=6 into the text box.After you enter the expression, Algebra Calculator will plug x=6 in for the equation 2x+3=15: 2(6)+3 = 15.
Gold hack priston tale. The calculator prints 'True' to let you know that the answer is right.
More Examples
Here are more examples of how to check your answers with Algebra Calculator.Feel free to try them now.- For x+6=2x+3, check (correct) solution x=3: x+6=2x+3 @ x=3
- For x+6=2x+3, check (wrong) solution x=2: x+6=2x+3 @ x=2
- For system of equations x+y=8 and y=x+2, check (correct) solution x=3, y=5: x+y=8 and y=x+2 @ x=3, y=5
- For 3xy=18, check (correct) solution x=2, y=3: 3xy=18 @ x=2, y=3
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