| There are two serious problems with this answer:
1. "x" is not a constant, so it cannot be slipped outside the integral sign; 2 "dx" has been replaced by "du" rather than by (1/6x) du. |
| There are two serious problems with this answer:
1. "x" is not a constant, so it cannot be slipped outside the integral sign; 2 "dx" has been replaced by "du" rather than by (1/6x) du. |