| y | ||
y'− | =lnxy4 z=y−3; y=z−3; y'=−3z−4z'; y4=z−12 | |
| 3x |
| z−3 | ||
−3z−4*z'− | =lnxz−12 /:z−12 | |
| 3x |
| z9 | ||
−3z8*z'− | =lnx | |
| 3x |
| z9 | ||
−3z8*z'− | =0 | |
| 3x |
| z9 | ||
−3z8*z'= | /:z9 /:−3 | |
| 3x |
| 1 | ||
z−1dz=− | dx /całka | |
| 9x |
| 1 | ||
ln|z|=− | ln|x|+C /e | |
| 9 |
| −1 | ||
z=x | *C2 | |
| 9 |
| −1 | −10 | −1 | ||||
z'= | x | *C2(x)+C'2(x)*x | ||||
| 9 | 9 | 9 |