Mathematics · Metric Spaces
Which of the following defines a metric on ℝ?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1d(x, y) = |x - y|✓
- 2d(x, y) = x2 - y2
- 3d(x, y) = |x2 - y2|
- 4d(x, y) = |x| + |y|
Correct answer
d(x, y) = |x - y|
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