This is an old revision of the document!
This is a proof of the product rule. I wrote this during a vodcast I created which is on YouTube at my channel, which is <a href=“https://www.youtube.com/user/oemb1905z/channels” target=“_blank”>YouTube</a>.
<a target=“_blank” href=“http://ic.pics.livejournal.com/oemb1905/19468200/325574/325574_original.jpg”><img src=“http://ic.pics.livejournal.com/oemb1905/19468200/325574/325574_original.jpg” alt=“” title=“” width=“550” />
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