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log(649)\log\left(\frac{64}{9}\right)

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Q. log(649)\log\left(\frac{64}{9}\right)
  1. Recognize Logarithm Split: Recognize that the logarithm can be split into the difference of two logarithms when dealing with a division inside the log. log(649)=log(64)log(9)\log\left(\frac{64}{9}\right) = \log(64) - \log(9)
  2. Convert Numbers to Powers: Convert the numbers inside the logarithms to powers of their base numbers. The base of the logarithm is 1010 by default, but we can express 6464 as 262^6 and 99 as 323^2, which will be useful for simplification.\newlinelog(64)=log(26)\log(64) = \log(2^6) and log(9)=log(32)\log(9) = \log(3^2)
  3. Apply Power Rule: Apply the power rule of logarithms, which states that log(ab)=blog(a)\log(a^b) = b\log(a), to both logarithms.\newlinelog(26)=6log(2)\log(2^6) = 6\log(2) and log(32)=2log(3)\log(3^2) = 2\log(3)
  4. Substitute Expressions: Substitute the expressions from Step 33 back into the equation from Step 11.\newlinelog(649)=6log(2)2log(3)\log\left(\frac{64}{9}\right) = 6\log(2) - 2\log(3)
  5. Calculate Logarithm Values: Calculate the values of log(2)\log(2) and log(3)\log(3) using a calculator or logarithm table.\newlinelog(2)0.3010\log(2) \approx 0.3010 and log(3)0.4771\log(3) \approx 0.4771
  6. Multiply by Coefficients: Multiply the logarithm values by their respective coefficients from Step 44.\newline6log(2)6×0.3010=1.80606\log(2) \approx 6\times0.3010 = 1.8060 and 2log(3)2×0.4771=0.95422\log(3) \approx 2\times0.4771 = 0.9542
  7. Find Final Answer: Subtract the value found for 2log(3)2\log(3) from the value found for 6log(2)6\log(2) to find the final answer.\newlinelog(649)1.80600.9542=0.8518\log\left(\frac{64}{9}\right) \approx 1.8060 - 0.9542 = 0.8518

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