the intensity of a barely felt earthquake. If the intensity of one earthquake is 50 times that of another, how many points greater is the bigger earthquake on the Richter scale? Increase in intensity: Closure: What does it mean to a logarithmic function? What does it mean to expand condense a logarithmic function? Expanding a logarithmic expression means to break the expression apart into multiple logarithms Condensing a logarithmic expression means to combine multiple logs into a single logarithm. How can you use a calculator to evaluate a logarithm when the base is not 10 or e? You can use the change of base formula, to evaluate any logarithm. , 4 6 Solve Exponential and Logarithmic Equations – Section: Why do logarithmic equations sometimes have extraneous Essential solutions? Question Warm Up: Key Vocab: Equations in which the variable occurs as the exponent Exponential Equation Example: Equations that involve logarithms of variable expressions Logarithmic Equation Example:
the intensity of a barely felt earthquake. If the intensity of one earthquake is 50 times that of another, how many points greater is the bigger earthquake on the Richter scale? Increase in intensity: Closure: What does it mean to expand a logarithmic function? What does it mean to condense a logarithmic function? Expanding a logarithmic expression means to break the expression apart into multiple logarithms Condensing a logarithmic expression means to combine multiple logs into a single logarithm. How can you use a calculator to evaluate a logarithm when the base is not 10 or e? You can use the change of base formula, , to evaluate any logarithm. Section: 4 – 6 Solve Exponential and Logarithmic Equations Essential Question Why do logarithmic equations sometimes have extraneous solutions? Warm Up: Key Vocab: Exponential Equation Equations in which the variable occurs as the exponent Example: Logarithmic Equation Equations that involve logarithms of variable expressions Example:
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