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Popular Functions >

inflection (x^3)/3+2x^2+4x-1

Solution

inflection points

\frac{x ^{3}}{3} + 2 x^{2} + 4 x - 1

Solution

(- 2, - \frac{11}{3})

Solution steps

f^{''} (x) = 2 x + 4

Find intervals:

Concave Downward

: - \infty < x < - 2,

Concave Upward

: - 2 < x < \infty

Plug

x = - 2

into

\frac{x ^{3}}{3} + 2 x^{2} + 4 x - 1 : - \frac{11}{3}

(- 2, - \frac{11}{3})

Graph

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Frequently Asked Questions (FAQ)

What is the inflection (x^3)/3+2x^2+4x-1 ?
The inflection (x^3)/3+2x^2+4x-1 is (-2,-11/3)