Analyzing concavity (algebraic) | AP Calculus AB | Khan Academy

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Sal finds the intervals where g(x)=-x_+6x_-2x-3 is concave down/up by finding where its second derivative, g'', is positive/negative.
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[@guliyevshahriyar]

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[@MellyXNY]

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[@aguyinavan6087]

3:20

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[@miguelsolorzano5840]

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