Which of the intervals contains the root of the f(x) = 2x − x3 + 3?

A. [1.4, 1.5]

Answer 1

What is: f(x) = 2x − x3 + 3?

if x3 is x cubed, that is written x^3 or x³
Is the 2x actually 2x⁴? Usually the higher power comes first.

Clarify and we’ll be glad to help.

Answer 2

f(x) is a polynomial function

if f(a)f(b)<0 and a < b then the root in (a , b)

Leave a Comment