Случайная величина Х задана функцией плотностью распределения вероятностей f (x). Найти математическое ожидание.<img src="/close/store/examRes/%7B77B303D8-C73C-41B3-93D4-B843EDE12FB8%7D/%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F%20%D0%BF%D0%BB%D0%BE%D1%82%D0%BD%D0%BE%D1%81%D1%82%D0%B8%204.png" /> <img src="/close/store/examRes/%7B77B303D8-C73C-41B3-93D4-B843EDE12FB8%7D/%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F%20%D0%BF%D0%BB%D0%BE%D1%82%D0%BD%D0%BE%D1%81%D1%82%D0%B8%20%D0%BE%D1%82%D0%B2%D0%B5%D1%82%201.png" />, <img src="/close/store/examRes/%7B77B303D8-C73C-41B3-93D4-B843EDE12FB8%7D/%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F%20%D0%BF%D0%BB%D0%BE%D1%82%D0%BD%D0%BE%D1%81%D1%82%D0%B8%20%D0%BE%D1%82%D0%B2%D0%B5%D1%82%202.png" />, <img src="/close/store/examRes/%7B77B303D8-C73C-41B3-93D4-B843EDE12FB8%7D/%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F%20%D0%BF%D0%BB%D0%BE%D1%82%D0%BD%D0%BE%D1%81%D1%82%D0%B8%20%D0%BE%D1%82%D0%B2%D0%B5%D1%82%203.png" />, <img src="/close/store/examRes/%7B77B303D8-C73C-41B3-93D4-B843EDE12FB8%7D/%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F%20%D0%BF%D0%BB%D0%BE%D1%82%D0%BD%D0%BE%D1%81%D1%82%D0%B8%20%D0%BE%D1%82%D0%B2%D0%B5%D1%82%204.png" />