**How to find the logarithm of a negative number? Why is it**

numpy will do that for you. import numpy numpy.log10(mat) Note. mat does not have to be a numpy array for this to work, and numpy should be faster than using a list comprehension as other answers suggest.... Returns the logarithm of a number to the base you specify. Syntax. LOG(number, [base]) The LOG function syntax has the following arguments: Number Required. The positive real number for which you want the logarithm. Base Optional. The base of the logarithm. If base is omitted, it is assumed to be 10. Example. Copy the example data in the following table, and paste it in cell A1 of a new Excel

**How to Calculate Log2 Sciencing**

Thus, log 10 x is related to the number of decimal digits of a positive integer x: the number of digits is the smallest integer strictly bigger than log 10 x. For example, log 10 1430 is approximately 3.15.... The complex logarithm is needed to define exponentiation in which the base is a complex number. Namely, if a and b are complex numbers with a â‰ 0, one can use the principal value to define a b = e b Log a. One can also replace Log a by other logarithms of a to obtain other values of a b.

**How to find the log of a negative number? Yahoo Answers**

Thus, log 10 x is related to the number of decimal digits of a positive integer x: the number of digits is the smallest integer strictly bigger than log 10 x. For example, log 10 1430 is approximately 3.15.... 2017-06-11Â Â· Log of negative number is not possible mathematically but for econometrics research, sometimes we have to take log of negative numbers which creates missing values.

**Log of a Negative Number The Math Forum at NCTM**

Note that the diff-log that corresponds to a 50% decrease is â€‘0.693 while the diff-log of a 100% increase is +0.693, exactly the opposite number. This reflects the fact that a 50% decrease followed by a 100% increase (or vice versa) takes you back to the same spot.... The Excel LOG10 function returns the base 10 logarithm of a number. For example, LOG10(100) returns 2, and LOG10(1000) returns 3.

## How To Take The Log Of A Number

### Trick School how to calculate log of a number without

- AntiLogs UCSB Campus Learning Assistance Services
- Logarithms 2LASP|CU-Boulder
- How to find antilog of number science.answers.com
- logarithms Units of a log of a physical quantity

## How To Take The Log Of A Number

### Thus, log 10 x is related to the number of decimal digits of a positive integer x: the number of digits is the smallest integer strictly bigger than log 10 x. For example, log 10 1430 is approximately 3.15.

- When we take the logarithm of a number, the answer is the exponent required to raise the base of the logarithm (often 10 or e) to the original number. For example log base 10 of 100 is 2, because 10 to the second power is 100. Therefore, the natural logarithm of x is defined as the inverse of the natural exponential function:
- $\begingroup$ This agrees with the response to essentially the same question on the physics StackExchange, that the logarithm of a number with units (shown in plots all the time) actually means the logarithm of that number divided by the standard unit for that quantity. $\endgroup$ â€“ Steven C. Howell Oct 22 '18 at 20:22
- 2009-07-01Â Â· Of course, since the argument of a complex number (the angle part of the polar form) can have any multiple of [itex]2\pi[/itex] added to it, the log function is, â€¦
- So let's try a larger number, let's say we want to take log, base 6, of 216. What will this evaluate to? Well we're asking ourselves, "what power do we have to raise 6 to, to get 216?" 6 to the first power is 6, 6 to the second power is 36, 36 times 6 is 216. This is equal to 216. So this is 6 to the third power is equal to 216. So if someone says "what power do I have to raise 6 to-- this

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