| m(m + 1) | ||
| A - mx - | ———— | N y = 0, |
| 2 |
| m(m + 1) | m(m + 1) (2m + 1) | |||
| B - | ———— | x - | ———————— | N y = 0. |
| 2 | 6 |
Solving these, we find
| 2 + 4m | 6 | |||
| x = | ——— | A - | ——— | B, |
| m² - m | m² - m |
| 12 | B | 6 | A | ||
| y = | ——— | — | - | ——— | — |
| m³ - m | N | m² - m | N |
In the present case,
m = 8, N = 14, A = 138·4, B = 770·9;
whence x = 1·44
y = 0·252,
and we have the formula,