一夸脱的临界点ic

Calculus

Classify the critical points of $f(x) = x^4 - 4x^3 + 16x$ .

x = -1

is a local maximum, and

x = 2

is a local minimum.

x = -1

is a local maximum, and

x = 2

is an inflection point.

x = -1

是一个局部最小值,

x = 2

is an inflection point.

x = -1

是一个局部最小值,

x = 2

is a local maximum.

x = -1

is an inflection point, and

x = 2

is a local maximum.