q

x₀

−2

−1

1

2

3

1.9

4

4

4

4

3

Absolute error

3.79385E−12

3.08198E−13

0

0

2.1

4

4

4

4

3

Absolute error

6.17284E−14

7.10543E−15

4.44089E−16

0

2.2

5

4

4

4

4

Absolute error

9.30589E−11

3.53939E−13

4.44089E−15

4.44089E−16