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[Solved] Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 8:29 am
by SergiusSilus
I can´t write my complex number in polar form • 1+i= sqrt{2} │_%pi over 4___ how to write argument with " │____ " symbol?? Thaks!!

Re: Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 1:50 pm
by acknak
Greetings and welcome to the community forum!

I'm not sure exactly what you want. Maybe something like this:

1+i= sqrt{2} left lline underline{%pi over 4} right none

Re: Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 7:58 pm
by MrProgrammer
Hi, and welcome to the forum. Thanks for the interesting question.

SergiusSilus wrote:I can´t write my complex number in polar form • 1+i= sqrt{2} │_%pi over 4___ how to write argument with " │____ " symbol??
Screen Shot 2016-03-26 at 12.40.55 .png
The text above was written with the Math component of Open Office. I can't attach the file because the forum, for some bizarre reason, doesn't allow uploads of .odf files. Here's the text used to create the Math formula.
"I've been a mathematician for 40 years." newline
"I have never seen notation like"~ sqrt{2} left lline underline{%pi over 4} right none newline
"though I would believe that's what your textbook uses." newline newline
"The usual ways to write" 1+i "in polar form are:" newline
sqrt{2} ( cos{%pi over 4} + i sin{%pi over 4} ) ~~~~"or"~~~~ sqrt{2} `func e^{i %pi over 4} newline
"I think engineers sometimes use:"~ sqrt{2} ~underline{size 20 "/"}~ %pi over 4

If this solved your problem please go to your first post use the Edit button and add [Solved] to the start of the title. You can select the green checkmark icon at the same time.

Re: Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 8:37 pm
by Daiwe01
The Unicode Angle character is predefined in the Symbol Catalog.

Re: Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 8:50 pm
by Hagar Delest
MrProgrammer wrote:The text above was written with the Math component of Open Office. I can't attach the file because the forum, for some bizarre reason, doesn't allow uploads of .odf files.

Because we had never had to upload such file in fact. I just allowed it so it should be fine for the next one.
Note that you can upload an ODT file, including the formula.

Re: Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 8:59 pm
by MrProgrammer
Hagar Delest wrote:Because we had never had to upload such file in fact. I just allowed it so it should be fine for the next one.
Thank you.

Hagar Delest wrote:Note that you can upload an ODT file, including the formula.
Actually I may have done that in the past but forgot about that solution when posting today.

Daiwe01 wrote:The Unicode value is U+2220.
The Unicode charts show what U+2220 is supposed to look like, and that seems to be different than the character produced by %angle, though %angle is an easy solution and may serve the OP's need adequately.
Screen Shot 2016-03-26 at 14.00.34 .png

On my system, %angle displays something similar to U+2222, pictured above. The exact shape of the character depends on the font.
Screen Shot 2016-03-26 at 14.15.48 .png
Screen Shot 2016-03-26 at 14.15.48 .png (6.4 KiB) Viewed 5323 times

Re: Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 9:34 pm
by Daiwe01
Daiwe01 wrote:The Unicode Angle character is predefined in the Symbol Catalog.

Oops. I should have verified the definition in the Catalog. :oops:
The character defined in the Symbol Catalog is actually U+2222 (Unicode name Spherical Angle).
Options now are change to U+2220 (Unicode name Angle) or add a new symbol for that character. How to add or modify Symbol Catalog characters

[solved] Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 9:49 pm
by SergiusSilus
thanks guys!!. now I use the right angle character!.
this mathematical expression is teaching at the University for pedagogic purpose. This is not a very academic form, but it is used in some chairs yet. I prefer uses subscript but my note-taking should reflect the class. however, in spanish speaking places, a common notation is the right angle character. Thanks again!!

Re: [Solved] Polar Form complex numbers

PostPosted: Sat Mar 26, 2016 10:04 pm
by floris v
In the Netherlands, polar co-ordinates are usually written in the form (radius, angle), or in this case (√2, π/4) (but an exception is made for complex numbers, they are written in the notation used by MrProgrammer). Maybe √2 | π/4 is a local variation on that notation.