Triangle Inequality/Real Numbers/Examples/-1 + 3
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Examples of Use of Triangle Inequality for Real Numbers
- $2 = \size {-1 + 3} \le \size {-1} + \size 3 = 1 + 3 = 4$
Sources
- 1977: K.G. Binmore: Mathematical Analysis: A Straightforward Approach ... (previous) ... (next): $\S 1$: Real Numbers: Example $\S 1.19 \ \text{(i)}$