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Popular >

inflection f(x)=x^3-9x^2-21x+2

Solution

inflection points

f (x) = x^{3} - 9 x^{2} - 21 x + 2

Solution

(3, - 115)

Solution steps

f^{''} (x) = 6 x - 18

Find intervals:

Concave Downward

: - \infty < x < 3,

Concave Upward

: 3 < x < \infty

Plug

x = 3

into

x^{3} - 9 x^{2} - 21 x + 2 : - 115

(3, - 115)

Popular Examples

inverse of-x+9 inverse

- x + 9

intercepts of 4x^3-2sqrt(5)x-4x intercepts

4 x^{3} - 25 x - 4 x

intercepts of y=2^x intercepts

y = 2^{x}

critical 2/(x^{1/3)}-2 critical points

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

domain of f(x)= 5/(sqrt(3+10x))domain

f (x) = \frac{5}{3 + 10 x}

Frequently Asked Questions (FAQ)

What is the inflection f(x)=x^3-9x^2-21x+2 ?
The inflection f(x)=x^3-9x^2-21x+2 is (3,-115)