Arithmetic Mean–Geometric Mean Relation

Rarely Tested

Arithmetic Mean–Geometric Mean Relation

## Formula

For two positive numbers $$a,b$$:

$$\frac{a+b}{2}\ge\sqrt{ab}$$

Equality holds when:

$$a=b$$

Therefore:

$$AM\ge GM$$

## Usage

- Used to find maximum or minimum values and establish inequalities.

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