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Popular >

extreme f(x)=-3x^3-9

Solution

extreme points

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

Solution

Saddle (0, - 9)

Solution steps

f^{'} (x) = - 9 x^{2}

Find intervals:

Decreasing

: - \infty < x < 0,

Decreasing

: 0 < x < \infty

Plug

x = 0

into

- 3 x^{3} - 9 : - 9

Saddle (0, - 9)

Popular Examples

extreme f(x)=-1/2 x^2+5-8 extreme points

f (x) = - \frac{1}{2} x^{2} + 5 - 8

extreme f(x)=-1/10 x^3+9x^2+500 extreme points

f (x) = - \frac{1}{10} x^{3} + 9 x^{2} + 500

extreme f(x)=x(x-2)e^{-3x}extreme points

f (x) = x (x - 2) e^{- 3 x}

extreme f(x,y)=x^3-4xy+y^2 extreme points

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

extreme f(t)=-4t^2+208t+120 extreme points

f (t) = - 4 t^{2} + 208 t + 120

Frequently Asked Questions (FAQ)

What is the extreme f(x)=-3x^3-9 ?
The extreme f(x)=-3x^3-9 is Saddle(0,-9)