3 years ago

PLZ HELP

Mathematics

1 answer:

Karolina [17]3 years ago

3 0

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What's the concavity of f(x)=x^2+4x

Anna71 [15]

$\bf f(x)=x^2+4x\qquad \cfrac{df}{dx}=2x+4\qquad \boxed{f''(x)=2}\impliedby 
\begin{array}{llll}
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\end{array}$

there are no inflection points, because it never changes concavity, is just a constant and thus for any region over the x-axis, will always be a positive value, and thus is always "concave up".

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Sindrei [870]

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