# HELP! Derive Newton's Law of cooling

Hey guys was hoping someone could give me a hint for the derivation of Newton's Law of cooling stated in the following equation form:

http://img263.imageshack.us/img263/3143/a6e5a27835e9e5738016606.png [Broken]

http://img716.imageshack.us/img716/8728/75784887.jpg [Broken]

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