Chapter 10: Problem 72
Use the special properties of logarithms to evaluate each expression. $$\log _{5} 5^{6}$$
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Chapter 10: Problem 72
Use the special properties of logarithms to evaluate each expression. $$\log _{5} 5^{6}$$
These are the key concepts you need to understand to accurately answer the question.
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To four decimal places, the values of \(\log _{10} 2\) and \(\log _{10} 9\) are $$\log _{10} 2=0.3010 \text { and } \log _{10} 9=0.9542$$ Use these values and the properties of logarithms to evaluate each expression. DO NOT USE A CALCULATOR. See Example 5. $$ \log _{10} 2^{19} $$
Suppose that in solving a logarithmic equation having the term \(\log (3-x)\), we obtain the proposed solution -4 . We know that our algebraic work is correct, so we reject -4 and give \(\varnothing\) as the solution set.
Use the change-of-base rule (with either common or natural logarithms) to approximate each logarithm to four decimal places. $$ \log _{1 / 2} 5 $$
The concentration of a drug in a person's system decreases according to the function $$ C(t)=2 e^{-0.125 t} $$ where \(C(t)\) is in appropriate units, and \(t\) is in hours. Approximate answers to the nearest hundredth. (a) How much of the drug will be in the system after \(1 \mathrm{hr} ?\) (b) How long will it take for the concentration to be half of its original amount?
Use the special properties of logarithms to evaluate each expression. $$\log _{9} \sqrt[3]{9}$$
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