Derivatives Question
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On what intervals is the function f(x)=3x3+2x2 concave upwards and downwards?
- concave upward (-29,∞), concave downward (-∞,-29)
- concave upward (-∞,-29), concave downward (-29,∞)
- concave upward (0,∞), concave downward (-∞,0)
- concave upward (-∞,0), concave downward (0,∞)