01:00 – 用「和」串連的複合不等式 | compound linear inequalities connected by “and”03:59 – 用「或」串連的複合不等式 | compound linear inequalities connected by “or”05:59 – 例子 1 | example 107:14 – 例子 2 | example 208:42 – 例子 3 | example 310:35 – 例子 4 | example 4