| x2−8x+16 | ||
a) lim | ||
| 2x−8 |
| x2+3x+2 | ||
b) lim | ||
| x2−4 |
x ≠ 4
| x2 − 8 x + 16 | ( x − 4)2 | x − 4 | ||||
f(x) − | = | = | ||||
| 2 x − 8 | 2*(x − 4) | 2 |
| 4 − 4 | ||
lim f(x) = | = 0 | |
| 2 |
| ( x +2)*(x + 1) | x +1 | |||
b) f(x) = | = | ; x ≠ − 2 i x ≠ 2 | ||
| (x −2)*(x + 2) | x −2 |
| − 2 + 1 | 1 | |||
lim f(x) = | = | |||
| − 2 − 2 | 4 |