∴
4(3?a) |
3+a |
4(3?3log123) |
3+3log123 |
=
4(1?log123) |
1+log123 |
=
log12124?log1234 |
log12 36 |
=
log12256 |
log1236 |
=log36256
=log616.
∴l(xiāng)og616=
4(3?a) |
3+a |
4(3?a) |
3+a |
4(3?a) |
3+a |
4(3?3log123) |
3+3log123 |
4(1?log123) |
1+log123 |
log12124?log1234 |
log12 36 |
log12256 |
log1236 |
4(3?a) |
3+a |