Simplification and Arg[]
- To: mathgroup at smc.vnet.net
- Subject: [mg66593] Simplification and Arg[]
- From: Andrew Moylan <andrew.moylan at anu.edu.au>
- Date: Sun, 21 May 2006 22:30:37 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Should Mathematica be able to simplify the following expression? (It is easily seen to be zero under the given condition, x > 0.) FullSimplify[ Arg[1 + I * x] + Arg[1 - I * x], {x > 0} ] In particular, I would have expected the following to yield ArcTan[b / a], from which the above expression is easily reduced to zero: FullSimplify[ Arg[a + I b], {a > 0, b > 0} ] Any ideas? Cheers, Andrew P.S. Apologies if I have sent this twice; my original message seems not to have worked.
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