2 | 1 | |||
lim x−>2 ( | + | ) | ||
2x−x2 | x2−3x+2 |
−2 | 1 | −(x−2) | −1 | |||||
f(x)= | + | = ..... | = | |||||
x(x−2) | (x−2)(x−1) | x(x−2)(x−1) | x(x−1) |
1 | ||
x→2 limf(x)=f(2)= − | ||
2 |
−2*(x−2)(x−1)+x(x−2) | |
⇔ | |
x(x−2)(x−2)(x−1) |
(x−2)(−2(x−1)+x) | |
⇔ | |
x(x−2)(x−2)(x−1) |
−2(x−1)+x | |
⇔ | |
x(x−1)(x−2) |
−2x+2+x | |
⇔ | |
x(x−1)(x−2) |
−x+2 | |
⇔ | |
x(x−1)(x−2) |
−(x−2) | |
x(x−1)(x−2) |