Logarithms
Two to the what gives 32? A logarithm is the answer to that question, and its laws are the index laws in disguise.
What this unit covers
Unit 2: Indices, Surds and Logarithms
- 1 Laws of IndicesOne bacterium becomes a billion before breakfast. Indices are the shorthand for repeated multiplying. · 10 min
- 2 SurdsKeep the square root exact, simplify it, and never leave one in a denominator. · 10 min
- 3 LogarithmsTwo to the what gives 32? A logarithm is the answer to that question, and its laws are the index laws in disguise. · 10 min
- 4 Exponential Growth, Decay and Half-LifeWhen will the culture pass a million? When is only a tenth of the tracer left? Logs bring the unknown down from the index. · 10 min