(d) Identify intervals where the function is concave up. O[-3,00) O(-3,-1) O(-4,-2) O(-4,-3) U (−1, ∞) (-2,0) (e) Identify intervals where the function is concave down O-3, ∞) (-3,-1) O(-4,-2) Ⓒ (-4, -3) U (−1,∞) O(-2,0)

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