What is the extreme 120x-0.4x^4+700 ?

The extreme 120x-0.4x^4+700 is Maximum(\sqrt[3]{75},1079.54469…)

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extreme 120x-0.4x^4+700

extreme points

120 x - 0.4 x^{4} + 700

Solution steps

f^{'} (x) = - 1.6 x^{3} + 120

Find intervals:

Increasing

Decreasing

Plug

into

120 x - 0.4 x^{4} + 700 : 1079.54469 \dots

x + y = - 4

x^{2} + 2 x

f (x) = \frac{x}{6 x + 25}

\frac{x ^{2}}{x ^{2} + 1}

2 x + 4

What is the extreme 120x-0.4x^4+700 ?
The extreme 120x-0.4x^4+700 is Maximum(\sqrt[3]{75},1079.54469…)