Какая из линейных комбинаций является выпуклой?<img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%201%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" /><img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%203%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" /><img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%202%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" /><img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%204%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" /> <img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%201%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" />, <img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%202%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" />, <img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%203%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" />, <img src="/close/store/examRes/%7BE695ECD7-D22F-45E6-BE3E-AAF1FFF63D7B%7D/%D0%BE%D1%82%D0%B2%D0%B5%D1%82%204%20%D0%BA%20%D0%B2%D0%BE%D0%BF%D1%80%203.bmp" />