What is the extreme f(x)=-x^3+2x^2 ?

The extreme f(x)=-x^3+2x^2 is Minimum(0,0),Maximum(4/3 , 32/27)

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extreme f(x)=-x^3+2x^2

extreme points

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

Minimum (0, 0), Maximum (\frac{4}{3}, \frac{32}{27})

Solution steps

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

Find intervals:

Decreasing

: - \infty < x < 0,

Increasing

: 0 < x < \frac{4}{3},

Decreasing

: \frac{4}{3} < x < \infty

Plug

x = 0

into

- x^{3} + 2 x^{2} : 0

Minimum (0, 0)

Plug

x = \frac{4}{3}

into

- x^{3} + 2 x^{2} : \frac{32}{27}

Maximum (\frac{4}{3}, \frac{32}{27})

Minimum (0, 0), Maximum (\frac{4}{3}, \frac{32}{27})

f (x, y) = (x^{2} + y^{2}) \cdot e^{- x - y}

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

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

f (x, y) = x^{y}

f (x) = 4 x^{3} - 39 x^{2} + 90 x + 2

What is the extreme f(x)=-x^3+2x^2 ?
The extreme f(x)=-x^3+2x^2 is Minimum(0,0),Maximum(4/3 , 32/27)