Math Problem Statement

Докажи обратное неравенство треугольника для вещественных чисел

Solution

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Math Problem Analysis

Mathematical Concepts

Inequalities
Triangle Inequality
Absolute Value
Real Numbers
Collinearity

Formulas

|a| + |b| ≤ |c|
a = λb (where λ ≥ 0)

Theorems

Reverse Triangle Inequality

Suitable Grade Level

Grades 11-12 (Pre-university level)