The 2nd function of the log button is the inverse log. Press 2nd log, which displays 10^( on the screen. Put a number after the opening parenthesis.
To find anti log of a number enter the number as the exponent of 10.
The negative log of a number is the log of the number's reciprocal ('1' divided by the number).
The anti-log of 12.34 is the inverse operation of taking the logarithm of a number. In this case, the anti-log of 12.34 is equal to 10^12.34, which is approximately 2511886431. A logarithm is the power to which a base must be raised to produce a given number, so the anti-log reverses this operation to find the original number.
in a problem like n4=625 you need to do a mult-step equations In the example, 4log n = log 625 log n = (log 625)/4 n = 10^[(log 625)/4] = 5 Although this particular answer is obvious, you could also solve n5=625, or any other power of n, which isn't, using this method. hope that it is helpful to you!
what if I give you the wrong answer
There are several stages to the calculation. These can be summarized in the formula=10^(LOG(x)/3)Where x = the number you want to find the cube root of. Excel example:In cell A1 enter the number you want to find the cube root of. e.g. 125In cell B1 enter the formula '=10^(LOG(A1)/3)' [omitting the 'quote' marks]The formula will return the answer 5, which is the cube root of 125. [5x5x5=125] Explanation of formula: * LOG (x) converts the original number to a logarithm. * /3 divides the Log by three * 10^ raises 10 to the power of the result of the previous calculations The equals ('=') sign is required when writing formulas into cells in Excel.Unfortunately there is no short way to find the cube root in excel, but the square root can be found by using =SQRT(number) An infinite number of 'roots' can be found by using =10^(LOG(x)/3). Just change the '3' to a number of your choice.
If you are using a scientific calculator you will have a key labelled "log". To find the logarithm (to base 10) of a number, simply enter "log" followed by the number that you want to log. If you want a natural logarithm - log to the base e - use the "ln" key instead. If you haven't got a scientific calculator, use the one on your computer.
The cube root of 100 can be written as 1001/3 or 3√100. There are many ways to determine the answer. One way is with the use of logarithms. 1) Convert 100 into logarithms. Using logs to the base 10 then log 100 = 2 2) To find the cube root divide log 100 by 3. Then 2/3 = 0.6666(recurring) 3) Using an antilogarithm system convert 0.6666 back into a decimal number = 4.6416 3√100 = 4.6416 (4dp)
The calculator won't do it.On the calculator, the button marked 10x gives youthe inverse log of the number in the window.
The 2nd function of the log button is the inverse log. Press 2nd log, which displays 10^( on the screen. Put a number after the opening parenthesis.
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One way to find log values without a logarithm book is to use the properties of logarithms. If you have a base and an exponent equal to a number, you can rewrite it in logarithmic form. Another method is to use a calculator or online tool to compute the log value of a number.
Here are four ways: (1). Take the log of 7. (You have to either look it up in a book, find it on a slide rule or calculator, or remember the infinite series definition of the log function and calculate the first 10 or 15 terms of the series.) Then take one third of the log. Then find the anti-log of the quotient. (2). There is a direct procedure to calculate the cube root of a number with a pencil and paper. Although I was working as a professional engineer before calculators and computers were generally available, I learned the pencil method for square roots, but not the one for cube roots. (3). Find the approximate cube root directly on a slide rule. (4). Use a hand-calculator, or a calculator simulator on a computer. These days, it's the only way that makes sense.
Well, darling, to find the antilog of a negative number using a log table, you first need to find the positive equivalent of the negative number. Add the negative number to the log base, and then look up the result in the log table to find the antilog value. Just remember, math doesn't have time for negativity, so keep it positive!
Example 27=n3 : Take the cube root of 27. In general find the log, divide it by the power, then take the antilog.