| q x0 | −1 | 1 | 3 | 6 | 9 | 12 |
| 0.5 | #NUM! | 28 | Oscillation | #NUM! | 13 | #NUM! |
| 1 | #DIV/0! | 45 | Oscillation | #NUM! | 9 | #NUM! |
| 1.5 | #DIV/0! | 54 | Oscillation | #NUM! | 4 | #NUM! |
| 1.65 | #DIV/0! | 10 | 7 | 5 | 5 | 5 |
| 1.7 | 16 | 8 | 6 | 5 | 4 | 4 |
| 1.8 | 7 | 6 | 5 | 4 | 4 | 4 |
| 1.85 | 6 | 5 | 5 | 4 | 3 | 4 |
| Absolute error | 2.66674E−10 | 2.87181E−10 | ||||
| 1.89 | 5 | 5 | 4 | 4 | 3 | 4 |
| Absolute error | 2.59915E−10 | 2.87176E−10 |