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Section 7.4 notes April 18, 2016 7.4 Solving Exponential Equations Using Logarithms Note: To solve exponential equations which can be written as the same base we make the bases the same and make the exponents equal. x Solve 2 = 8 1 Section 7.4 notes April 18, 2016 Note: Another way to solve exponential equations is by taking the log or ln of both sides of the equation and using our laws of exponents we can solve for x. 2 Section 7.4 notes April 18, 2016 When we cannot make the bases of exponential equations equal we can take the log or ln of both sides to solve. Example: Solve 3x = 7 3 Section 7.4 notes April 18, 2016 Example: Solve 3x1 = 20 4
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