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College Algebra  /  Alg 265  ·  Atom · ~20 seconds

Increasing and Decreasing Functions

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A function is increasing on an interval when outputs rise as inputs rise within it, and decreasing when outputs fall as inputs rise.

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f(x) = x² falls on (−∞, 0) and rises on (0, ∞) — read left to right, downhill then uphill, with the turn at the bottom.

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