作者GayerDior (蜡笔小新<(￣.￣)/)
看板trans_math
标题[微分] 两题微分应用
时间Sun Mar 18 17:40:33 2007
下两题考在微积分考卷上
E:
Under ideal conditions a certain bacteria population is known to double
every three hours.
Suppose that there are initially 100 bacteria.When will the population first
reach 50,000?
E:
A ladder 10ft long rests against a vertical wall.If the bottom of the ladder
slides away from the wall at a speed of 2ft/s, how fast is the angle between
the top of the ladder and the wall changing when the angle is π/4 rad?
如果有人会写，
请帮我写出详细过程，
谢谢。
--
○ "○ ○" ○"
(|\ (|\ )) ))
/`○rz /`○r27\" ○r27\"
○╭○rz ○rz ○rz-st○
￣′ ○=^
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.139.242.73
1F：→ yhliu:只是大一微积分教本的基本练习! 163.15.188.87 03/18 17:50
2F：→ GayerDior:我只算中文参考书 没看原文书 完蛋..... 220.139.242.73 03/18 18:00