Chapter 4.5, Problem 23E

To determine

To approximate: The real zeros of $f\left(x\right)=2x^4-x^3+x-2$ to the nearest tenth.

Answer to Problem 23E

The approximate zero is $x=-1.1$

The approximate zero is $x=1.3$

Explanation of Solution

Given information: $f\left(x\right)=2x^4-x^3+x-2$

Calculation:

  $f\left(x\right)=2x^4-x^3+x-2$

  

Since − 0.3049 is closer to 0,

The approximate zero is $x=-1.1$

  

And since − 0.0409 is closer to zero,

The other approximate zero is $x=1.3$