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Popular Functions >

inflection 1+x-x^2-x^3

Solution

inflection points

1 + x - x^{2} - x^{3}

Solution

(- \frac{1}{3}, \frac{16}{27})

Solution steps

f^{''} (x) = - 6 x - 2

Find intervals:

Concave Upward

: - \infty < x < - \frac{1}{3},

Concave Downward

: - \frac{1}{3} < x < \infty

Plug

x = - \frac{1}{3}

into

1 + x - x^{2} - x^{3} : \frac{16}{27}

(- \frac{1}{3}, \frac{16}{27})

Graph

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Frequently Asked Questions (FAQ)

What is the inflection 1+x-x^2-x^3 ?
The inflection 1+x-x^2-x^3 is (-1/3 , 16/27)