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Popular >

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})

Popular Examples

monotone f(x)=x^3-3x+8 monotone intervals

f (x) = x^{3} - 3 x + 8

domain of f(x)=((28x+7))/(x^2)domain

f (x) = \frac{( 28 x + 7 )}{x ^{2}}

domain of sqrt(x^2-144)domain

x^{2} - 144

range of 4x-x^2 range

4 x - x^{2}

intercepts of f(x)=(x^2+x-6)/(x-2)intercepts

f (x) = \frac{x ^{2} + x - 6}{x - 2}

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)