- Home
- GCE O-Level A Maths
- Logarithms
Evaluating logarithms without a calculator
- Lesson: 1a1:45
- Lesson: 1b2:31
- Lesson: 1c1:57
- Lesson: 1d5:22
- Lesson: 1e1:54
- Lesson: 1f2:01
- Lesson: 2a5:27
- Lesson: 2b0:30
- Lesson: 34:14
- Lesson: 45:04
Evaluating logarithms without a calculator
Related Concepts: Logarithmic scale: Richter scale (earthquake), Logarithmic scale: pH scale, Logarithmic scale: dB scale
Lessons
- 1.Evaluate:a)log832b)log51[useful rule: logb1=0]c)log55[useful rule: logbb=1]d)-3log161024e)log3(811)f)log2564
- 2.A Logarithmic Expression As An Exponent
Evaluate:a)3log39[useful rule: blogba=a]b)2log21024 - 3.evaluate:log25125
- 4.without using a calculator, determine which logarithmic expression has a bigger value:
log220vs.log380
Do better in math today
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