[微分] 兩題微分應用

[GayerDior (蠟筆小新<(￣.￣)/)]

下兩題考在微積分考卷上

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?



如果有人會寫，

請幫我寫出詳細過程，

謝謝。


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