初学LV，请教怎么写分段函数问题

crhallan

设定取值表[V1L,  V1H];
                 [V2L,  V2H];
                         .
                         .
                         .
                 [V9L,   V9H];
如果VxL  <=  Va  <= VxH  显示  X。请教如何搞，初学，实在没门路。谢谢！

飞雨天

For each case, use the Labeling tool to enter a single value or lists and ranges of values in the case selector label at the top of the Case structure. For lists, use commas to separate values. For numeric ranges, specify a range as 10..20, meaning all numbers from 10 to 20 inclusively. You also can use open-ended ranges. For example, ..100 represents all numbers less than or equal to 100, and 100.. represents all numbers greater than or equal to 100. For string ranges, a range of a..c includes all strings beginning with a or b, but not c. A range of a..c,c includes the ending value of c.

用case，然后参考上面这段话