Найти интервалы возрастания функции y = x<sup>5</sup> + 10x<sup>4</sup> + 20x<sup>3</sup> + 5:<img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf29.1.gif" /><img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf29.2.gif" /><img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf29.4.gif" /><img src="/close/store/examRes/%7B9B820A29-D263-43B6-ADA5-062E1898D27C%7D/prf29.3.gif" /> <img src="/img/75/37d1950b480226ff08de382242.gif" />, <img src="/img/1e/318374c61008e41fbb6adc1abf.gif" />, <img src="/img/67/0c350912c82ab138d643c75461.gif" />, <img src="/img/a5/63e5b41f38750cefaad2aa445f.gif" />