Найти интервалы возрастания функции y = 25x<sup>3</sup> - 3x<sup>5</sup> - 15x<sup>4</sup> + 8:<img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf27.1.gif" /><img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf27.2.gif" /><img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf27.3.gif" /><img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf27.4.gif" /> <img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf27.1.gif" />, <img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf27.2.gif" />, <img src="/img/0d/97172d6e775427d8919fade8e4.gif" />, <img src="/img/11/21440e322a0a27df02ab4f466a.gif" />