| 5y | ||
f(x,y)= | ||
| x+2 |
| x4 | ||
f(x,y)= | + y2 − 2xy | |
| 4 |
| 5y | ||
1) f(x,y)= | ||
| x+2 |
| −5y | ||
fx=U{0*(x+2)−5y*1}}{(x+2)2= | [y traktujesz jak stałą] | |
| (x+2)2 |
| −(−5y)*2*(x+2) | 10y | |||
f{xx]= | = | |||
| (x+2)4 | (x+2)3 |
| 5 | ||
fy= | [ x traktujesz jak stałą] | |
| x+2 |
| x4 | ||
2)f(x,y)= | +y2−2xy | |
| 4 |
| x3 | ||
fx=4* | −2y=x3−2y | |
| 4 |