What is the extreme x^4-x^3-3x^2+5x-2 ?

The extreme x^4-x^3-3x^2+5x-2 is Minimum(-5/4 ,-2187/256),Saddle(1,0)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

extreme x^4-x^3-3x^2+5x-2

extreme points

x^{4} - x^{3} - 3 x^{2} + 5 x - 2

Minimum (- \frac{5}{4}, - \frac{2187}{256}), Saddle (1, 0)

Solution steps

f^{'} (x) = 4 x^{3} - 3 x^{2} - 6 x + 5

Find intervals:

Decreasing

: - \infty < x < - \frac{5}{4},

Increasing

: - \frac{5}{4} < x < 1,

Increasing

: 1 < x < \infty

Plug

x = - \frac{5}{4}

into

x^{4} - x^{3} - 3 x^{2} + 5 x - 2 : - \frac{2187}{256}

Minimum (- \frac{5}{4}, - \frac{2187}{256})

Plug

x = 1

into

x^{4} - x^{3} - 3 x^{2} + 5 x - 2 : 0

Saddle (1, 0)

Minimum (- \frac{5}{4}, - \frac{2187}{256}), Saddle (1, 0)

What is the extreme x^4-x^3-3x^2+5x-2 ?
The extreme x^4-x^3-3x^2+5x-2 is Minimum(-5/4 ,-2187/256),Saddle(1,0)