College Algebra / Alg 170 · Atom · ~20 seconds
The Swapped-Cases Error
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The swapped-cases error solves a less-than absolute value inequality as two rays, or a greater-than as a trap; the two shapes are not interchangeable.
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Solving |x| < 5 as rays admits x = 6 — but |6| = 6, and 6 < 5 is false. The ray answer welcomed a failing value.
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