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Popular >

extreme f(x)=-2x^3-7

Solution

extreme points

f (x) = - 2 x^{3} - 7

Solution

Saddle (0, - 7)

Solution steps

f^{'} (x) = - 6 x^{2}

Find intervals:

Decreasing

: - \infty < x < 0,

Decreasing

: 0 < x < \infty

Plug

x = 0

into

- 2 x^{3} - 7 : - 7

Saddle (0, - 7)

Popular Examples

domain of f(x)=sqrt(-5x+40)domain

f (x) = - 5 x + 40

inverse of f(x)=2^{x/4}inverse

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

domain of 8x+2 domain

8 x + 2

asymptotes of sqrt(2x-5)asymptotes

2 x - 5

perpendicular x+3y=5,(2,5)perpendicular

x + 3 y = 5, (2, 5)

Frequently Asked Questions (FAQ)

What is the extreme f(x)=-2x^3-7 ?
The extreme f(x)=-2x^3-7 is Saddle(0,-7)