Question

一道英文的微积分问题。

a glass of cold milk from the refrigerator is left on the counter on a warm summer day. its temperature(in degrees Fahrenheit) after sitting on the counter t minutes is y=72-30(0.98)^t. when is the milk warming the fastest? how can you tell? 要过程。 我要答案和做法，不要翻译。

Answer 1

夏天一杯从冰箱中拿出的牛奶放在桌上，从放在桌上算起，它的温度（华氏）随时间变化为：y=72-30(0.98)^t.，你能算牛奶温度变化最快的时间么？