Understand and Identify Properties: Understand the problem and identify the properties of logarithms to use.We need to evaluate the logarithm of 641 with base 32. We can use the change of base formula for logarithms, which is logba=logbloga, where all the logarithms are in the same base.
Apply Change of Base Formula: Apply the change of base formula.Using the change of base formula, we can write the expression as:log32(641)=log(32)log(641)We will use the common logarithm (base 10) for this calculation.
Evaluate Using Known Values: Evaluate the logarithms using known values.We know that 32 is 25 and 64 is 26. Therefore, we can rewrite the logarithms as:log(641)=log(1)−log(64)=0−log(26)=−6⋅log(2)log(32)=log(25)=5⋅log(2)
Divide Logarithms: Divide the two logarithms.Now we divide the two expressions we found in Step 3:(−6×log(2))/(5×log(2))Since log(2) is in both the numerator and the denominator, they cancel out, leaving us with:−6/5
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