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plotting equations

• To: mathgroup at smc.vnet.net
• Subject: [mg121693] plotting equations
• From: michael partensky <partensky at gmail.com>
• Date: Mon, 26 Sep 2011 04:14:38 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hi everybody.
I wonder what is plotted here:

Plot[Sin[x] == 2 Cos[x], {x, -1, 6}, Frame -> True, GridLines -> Automatic]

Thanks
Michael