标题: 陳向東數學第三章第26題 解答不是很懂 [打印本页] 作者: amber4cdream 时间: 2015-9-24 13:18 标题: 陳向東數學第三章第26題 解答不是很懂 A certain company has found that the number c laber hours required to produce x items is directly proportional to the square root of x. if 3 labor hours are required to produce 20 items. How many labor hours are required to produce 40 items?
这题解答说
c 和x的函数关系是 c = k * sqrt(x);
请问k是哪里来的呢？
谢谢～
作者: wilz 时间: 2015-10-8 07:58
It comes from the word "proportional".作者: amber4cdream 时间: 2015-10-20 18:11
Thank you for your help!