10是第十周 你可以替换成变量
dateInWeek(DATEDELTA(TODAY(),-(WEEK(TODAY())-10)*7),-1) 最后一天
dateInWeek(DATEDELTA(TODAY(),-(WEEK(TODAY())-10)*7),1) 第一天
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可以把today()换成 $年份控件+"02-01"
dateInWeek(DATEDELTA($年份控件+"02-01",-(WEEK($年份控件+"02-01")-$周控件)*7),-1) 最后一天
dateInWeek(DATEDELTA($年份控件+"02-01",-(WEEK($年份控件+"02-01")-$周控件)*7),1) 第一天