🔢
Inequality
★★☆☆☆Middle School
📖Definition
An expression showing the relationship between two values using inequality symbols.
📐Formulas
a < b, a > b, a ≤ b, a ≥ b
Types of inequality symbols
a < b ⇒ a + c < b + c
Adding same value preserves inequality
a < b, c > 0 ⇒ ac < bc
Multiplying by positive preserves inequality
a < b, c < 0 ⇒ ac > bc
Multiplying by negative reverses inequality
✏️Examples
예제 1★☆☆☆☆
Solve 2x - 3 > 5.
예제 2★★☆☆☆
Solve -3x + 6 ≤ 12.
⚡Applications
Optimization
Expressing constraints
Economics
Budget constraints
🔗Related Documents
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