What is the monotone f(x)=x^2+4x ?

The monotone f(x)=x^2+4x is Decreasing:-infinity <x<-2,Increasing:-2<x<infinity

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monotone f(x)=x^2+4x

monotone intervals

f (x) = x^{2} + 4 x

Decreasing : - \infty < x < - 2, Increasing : - 2 < x < \infty

Solution steps

f^{'} (x) = 2 x + 4

Find intervals:

Decreasing

: - \infty < x < - 2,

Increasing

: - 2 < x < \infty

Decreasing : - \infty < x < - 2, Increasing : - 2 < x < \infty

What is the monotone f(x)=x^2+4x ?
The monotone f(x)=x^2+4x is Decreasing:-infinity <x<-2,Increasing:-2<x<infinity