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Q&A for How to Use Logarithmic Tables
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QuestionHow do I find the log of a cube?DonaganTop AnswererTriple the log of the number that has been cubed.
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QuestionHow do I find logs for 3.14?Community AnswerMultiply 3.14 with 10 to get 31.4, then find log (31.4), which is roughly 1.4969. Now, divide this by 10 to get your log with base 10.
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QuestionHow do I find the log of a single digit?Community AnswerSay you want to find the log of 9. You know that 9 = 9.0 = 9.00 and so on. Now that you have the correct number of significant digits, you can use a log table as long as you deal with decimal points correctly.
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QuestionHow can one find the log of 3.5?Community Answer3.5 = 3.50 (with as many 0's as you want.) You now have enough significant digits to follow method 2 in the article.
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QuestionIf I have divided numbers using log, then how do I use an antilog?Community AnswerAs long as the quotient is an exponent, you can use the normal method to find the antilog.
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QuestionHow do we find the logarithm of 2000?Community AnswerFind the log 2000=.1585. Then add 3 as 2000 is between 1000 and 10000. Answer is 3.1585.
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QuestionHow can I make my own log table when I don't have a log book?Community AnswerChoose the base you want to use. Write the numbers 10-99 down the left side and the numbers 0-9 across the top. Use a calculator or spreadsheet to calculate the log for each space in the table.
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QuestionHow do I find log(0.0046)?Community AnswerYou can express this as 46 x 10 to the power -3. The next step is to find log(46), then multiply it with 10 to the power -3.
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QuestionHow do I find the cube of 288 using the logarithmic tables?Balaaji SelvanathanCommunity Answer288^1/3 = x 1/3 log(288)=log x 1/3(2.459)=log x 0.819=log x x=Al(0.819)=6.603(approx)
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QuestionHow do I find anti-log -3.746?Joab KalyegiraCommunity AnswerExpress the log as negative characteristic minus the mantissa -3-0.746. Subtract 1 from characteristic and add one to the mantissa in order to make it positive; if you're using a log table, -3 - 1 - 0.746 + 1. Write the result as a log having a negative characteristic and a positive mantissa -4 + 0.254. Then use the log table to find the anti-log. Anti-log of -3.746 is 1.795x10^-4 = 0.0001795.
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QuestionHow can I find the value of -log 34?Community AnswerMultiply it with 10 and make it 3.4 and you will get 10 raised to the power of 1, now find log 34 which is 1.531 and the approximate answer is 1.1531.
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QuestionHow do I calculate the log of 0.1/0.01?Community Answer0.1/0.01 is 10 and the common logarithm of 10 is, of course, 10. Be sure to simplify the problem if you can.
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QuestionHow do I use the log table to find the log of 150?Community AnswerFind the log of 15, then add 1 to it. Just use method 1 in the article to find log 15.
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QuestionHow to find log of more than 4 digit numbers?Community AnswerUse the identity log(ac) = log(a) + log(c). For example, log(1876) = log(18.76*100) = log(18.76) + log(100) = log(18.76) + 2. Use the table to find log(18.76) and add two, and there is your answer.
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QuestionHow do I find the log that's a negative power?Community AnswerMultiply the whole radical by the given power. For example, log 10^(-3)=(-3)log 10.
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QuestionHow do I divide 176 by 1024 using a logarithmic table?Community AnswerFind the log of both these numbers, then subtract them. And then find the antilog of the number you get. That'll be your answer.
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QuestionHow do I find the log of a mixed number?Community AnswerFirst, convert the mixed number into a fraction, then convert into a decimal. Then repeat the steps above.
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