问一道英文的数学题~大家帮帮偶挖偶有个同学跑去加拿大上学了,然后他发了这题目给我…… = =forty metres of fencing are available to enclose a rectangular pen.when the length of the pen is X metres ,the area of the p
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问一道英文的数学题~大家帮帮偶挖偶有个同学跑去加拿大上学了,然后他发了这题目给我…… = =forty metres of fencing are available to enclose a rectangular pen.when the length of the pen is X metres ,the area of the p
问一道英文的数学题~大家帮帮偶挖
偶有个同学跑去加拿大上学了,然后他发了这题目给我…… = =
forty metres of fencing are available to enclose a rectangular pen.when the length of the pen is X metres ,the area of the pen,is square metres ,is expressed as 201-X'2 what is the area of the pen for each value of
补充:
X‘2的意思是X的平方
问一道英文的数学题~大家帮帮偶挖偶有个同学跑去加拿大上学了,然后他发了这题目给我…… = =forty metres of fencing are available to enclose a rectangular pen.when the length of the pen is X metres ,the area of the p
将40m的围栏充分利用,用来做一个矩形的羊圈.当羊圈长为X米时,羊圈的面积为201-X'2平方米,求X的每种可能取值下的羊圈的面积.
40米长的围栏,可附上一个长方形羊圈。当长的笔为x米,面积笔,是平方米,是表示, 201 - x'2是什么领域的笔为每个x的值呢?