| 1 | ||
( | +U{4−x2}) | |
| 4x−8 |
| 1 | 1 | |||
( | + | ) | ||
| 4x−8 | 4−x2 |
| (x−2)2 | ||
−( | ||
| (4x−8)(4−x2) |
| 1 | 1 | |||
f(x) = | + | = | ||
| 4*(x −2) | (2 − x)*(2 + x) |
| x + 2 | 4 | |||
= | − | = | ||
| 4*(x − 2)*(x + 2) | 4*(x − 2)*( x + 2) |
| x + 2 − 4 | x − 2 | 1 | ||||
= | = | = | ||||
| 4*(x −2)*(x + 2) | 4*(x −2)*(x + 2) | 4*(x −2)*(x +2) |
| 1 | ||
.... = | ||
| 4*(x +2) |
| 1 | 1 | |||
lim f(x) = | = | |||
| 4* 4 | 16 |