(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The largest interval on which the function f(x) = x^{2}+ 4x + 2 is increasing is

a. [0, ~)

b. (-~, 0]

c. [-2, ~)

d. (-~, -2]

e. (-2, ~)

2. Relevant equations

differentiation

3. The attempt at a solution

I am not sure the answer is (c) or (e). The condition that the function is increasing is f '(x) > 0 or f ' (x) [tex]\geq[/tex] 0?

Thanks

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# Homework Help: Increasing function

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