Determine the intervals at which f is concave down

Reference no: EM13961723

Determine the interval(s) at which f(x) is concave down given that f " (x) = 3x² + 3x - 18.

Give a formula for f (x) given that f is continuous and 2 x⁴ + x³ + 2 = ₀∫^x[f(t)/(t+4)] dt.

Reference no: EM13961723

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