What is the extreme f(x)=x^3-12x^2-27x-26 ?

The extreme f(x)=x^3-12x^2-27x-26 is Maximum(-1,-12),Minimum(9,-512)

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extreme f(x)=x^3-12x^2-27x-26

extreme points

f (x) = x^{3} - 12 x^{2} - 27 x - 26

Maximum (- 1, - 12), Minimum (9, - 512)

Solution steps

f^{'} (x) = 3 x^{2} - 24 x - 27

Find intervals:

Increasing

: - \infty < x < - 1,

Decreasing

: - 1 < x < 9,

Increasing

: 9 < x < \infty

Plug

x = - 1

into

x^{3} - 12 x^{2} - 27 x - 26 : - 12

Maximum (- 1, - 12)

Plug

x = 9

into

x^{3} - 12 x^{2} - 27 x - 26 : - 512

Minimum (9, - 512)

Maximum (- 1, - 12), Minimum (9, - 512)

f (x) = \frac{6}{x ^{2} + 3}

f (x, y) = x^{2} - 4 x y + y^{3} + 4 y

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

f (x) = 4 x^{3} - x^{2} - 14 x - 42

f (x) = - cos (x) - sin (x)

What is the extreme f(x)=x^3-12x^2-27x-26 ?
The extreme f(x)=x^3-12x^2-27x-26 is Maximum(-1,-12),Minimum(9,-512)