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∫ − 2 2 min { x − ⌊ x ⌋ , − x − ⌊ − x ⌋ } d x = ? \int _{-2}^{2} \min\big\{x-\lfloor x \rfloor,-x - \lfloor-x \rfloor\big\} \, dx = \, ? ∫−22min{x−⌊x⌋,−x−⌊−x⌋}dx=?
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