| x3 | ||
y = | ||
| (x+2)2 |
| (x3)'(x+2)2 − x3[(x+2)2]' | 3x2(x+2)2 − x3*(2x + 4) | |||
y' = | = | = | ||
| (x+2)4 | (x+2)4 |
| 3x2(x+2) − 2x3 | 3x3+ 6x2 − 2x3 | x3+ 6x2 | |||
= | = | = | |||
| (x+2)3 | (x+2)3 | (x+2)3 |
| x2(x + 6) | |
| (x+2)3 |
| 3x2(x+2)2 − x3*2(x+2) | x2(x+2)*(3x+6−2x) | |||
y'= | = | = | ||
| (x+2)4 | (x+2)4 |
| x2(x+6) | ||
= | . ... | |
| (x+2)3 |