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Решение.
1) ОДЗ 9 - x^2 > 0, x^2 < 9, - 3 < x < 3</p>
2) sinx > 0, 2pi*n < x < pi + 2pi*n</p>
Учитывая 1) и 2) получим 0 < x < 3</p>
Ответ. (0 ; 3)