Guidelines for Solving Logarithmic Equations (page 362)
· Isolate the logarithmic expression on one side of the equation (you
may first need to combine the log terms )
· Raise the base to each side of the equation. (This gets rid of the log
· Use algebra to solve for the variable. And check your answer.
Suppose the population of a small town is increasing at a
rate of 5% each year.
In 2000, the population was 25,000 people.
Find a formula for the Population 't' years later.
What is the population today?
When will the population reach 100,000?
Examples of Exponential equations.
Examples. Try it two ways. First, get the exponential part
by itself, then take logs.
Second. Take Logs to start and use Laws of Logarithms to simplify.
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