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- Logarithms
Solving exponential equations with logarithms
- Lesson: 1a1:52
- Lesson: 1b1:57
- Lesson: 217:21
Solving exponential equations with logarithms
Related Concepts: Logarithmic scale: Richter scale (earthquake), Logarithmic scale: pH scale, Logarithmic scale: dB scale
Lessons
- 1.Solve for x , by converting from exponential form
to log form:a)y=5⋅2xb)6⋅3x=90 - 2.Let's revisit the earlier example about Bianca saving up money to buy her dream car, Mini Cooper.
Now we are ready to find out the exact amount of time it'll take Bianca to save up $30,000:
On Bianca's 5-year-old birthday, Bianca gets a birthday gift of $100 cash from her dad.
Bianca's dad promises to double her money yearly if Bianca plans to not spend the
money but instead deposits it into "daddy-super-saving-account". Will Bianca be able
to afford her dream car, Mini Cooper, worth $30,000 when she turns 16-year-old?
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19.
Logarithms
19.1
What is a logarithm?
19.2
Converting from logarithmic form to exponential form
19.3
Evaluating logarithms without a calculator
19.4
Common logarithms
19.5
Natural log: ln
19.6
Evaluating logarithms using change-of-base formula
19.7
Converting from exponential form to logarithmic form
19.8
Solving exponential equations with logarithms
19.9
Product rule of logarithms
19.10
Quotient rule of logarithms
19.11
Combining product rule and quotient rule in logarithms
19.12
Evaluating logarithms using logarithm rules
19.13
Solving logarithmic equations
19.14
Graphing logarithmic functions
19.15
Finding a logarithmic function given its graph
Don't just watch, practice makes perfect
Practice topics for Logarithms
19.1
What is a logarithm?
19.2
Converting from logarithmic form to exponential form
19.3
Evaluating logarithms without a calculator
19.4
Common logarithms
19.5
Natural log: ln
19.6
Evaluating logarithms using change-of-base formula
19.7
Converting from exponential form to logarithmic form
19.8
Solving exponential equations with logarithms
19.9
Product rule of logarithms