Practicing Success
Practicing Success
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The intervals in which the function $f(x)=2x^3+9x^2+12x+20$ is increasing is given by : |
$(-2, -1)$ $(-∞, -2)$ $(-∞,-2) ∪ (-1, ∞)$ $(-∞, ∞)$ |
$(-∞,-2) ∪ (-1, ∞)$ |
