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November 01, 2025, 07:28:40 pm
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Author Topic: Arg(z)  (Read 645 times)  Share 

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Chavi

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Arg(z)
« on: October 29, 2010, 03:30:24 pm »
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Is the base line (i.e. Argz=0 included when sketching arg graphs?

For example, on M.C. question 9 from Itute 2009:
http://www.itute.com/wp-content/uploads/2008-specialist-mathematics-trial-exam-2.pdf

I thought the answer was B, because 0 is not included, but it turns out that it's A, with 0 included, just not graphed. . .
Why is this?
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98.40_for_sure

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Re: Arg(z)
« Reply #1 on: October 29, 2010, 03:35:17 pm »
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The solution is saying everything in the complex field excluding... and 0 is excluded? Not sure exactly what it is you're asking.


EDIT: the white bit is
so therefore the shaded bit is everything that isn't that, so
C \
« Last Edit: October 29, 2010, 03:41:00 pm by 99.95_for_sure »
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Chavi

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Re: Arg(z)
« Reply #2 on: October 29, 2010, 03:50:01 pm »
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Ah. Missed out the "excluding" part. Thanks +1
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