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#1228
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HoM[M]
And you go to the воопу.
Is the letter "t" missing here? But there are dragons!

Added 4 minutes later
Ment
Yes. That's why it's unclear why the answer is negative. In general, it's obvious that H>=h, so the integral should be positive...
Just write it with a negative answer. There should definitely be a plus sign with the sine.
Всё не так плохо как Вы думаете. Всё намного хуже!