What is the monotone f(x)=-x^3-7 ?

The monotone f(x)=-x^3-7 is Decreasing:-infinity <x<0,Decreasing:0<x<infinity

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monotone f(x)=-x^3-7

monotone intervals

f (x) = - x^{3} - 7

Decreasing : - \infty < x < 0, Decreasing : 0 < x < \infty

Solution steps

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

Find intervals:

Decreasing

: - \infty < x < 0,

Decreasing

: 0 < x < \infty

Decreasing : - \infty < x < 0, Decreasing : 0 < x < \infty

f (x) = \frac{19}{x ^{3}}

2 y = 3 x + 12

f (x) = \frac{5 x}{x ^{2} - 4}

\frac{x + 1}{x + 8}

What is the monotone f(x)=-x^3-7 ?
The monotone f(x)=-x^3-7 is Decreasing:-infinity <x<0,Decreasing:0<x<infinity