Saved Bookmarks
| 1. |
If int cos xcdot cos 2 x cdot cos 5 x dx =A sin 2 x + B sin 4 x + C sin 6x + D sin 8 x + k (where k is the arbitrary constant of integration), then 1/B + 1/C = |
|
Answer» `1/A - 1/D` |
|