2. Determine where f(x) is concave up: f(x) = x+ + 2r3 – 36.x2 + 4x + 5 (10 points) f'(x) = 4.x} + 6rº – 72x + 4 f"(x) = 12x² + 12. – 72 = 12(x² + - 6) = 12(x+3)(x - 2) > 0 Concave up in (- 00, -3) U (2,00)

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2. Determine where f(x) is concave up: f(x) = x+ + 2r3 – 36.x2 + 4x + 5 (10 points) f'(x) = 4.x} + 6rº – 72x + 4 f"(x) = 12x² + 12. – 72 = 12(x² + - 6) = 12(x+3)(x - 2) > 0 Concave up in (- 00, -3) U (2,00)

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