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#1 2012-10-21 16:51:25
- Wink
- Guest
Signum function
What will be sgn(a+bi)?
#2 2012-10-21 17:21:44
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Signum function
Hi Wink;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3 2012-10-21 17:56:11
- Wink
- Guest
Re: Signum function
Is the csgn(x) function related to sgn(x)?
#4 2012-10-22 00:08:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Signum function
Hi;
The csgn function is defined like this:
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#5 2012-10-22 01:59:38
- Wink
- Guest
Re: Signum function
If I want to find sign of complex number what should I use, sgn(z) or csgn(z)
#6 2012-10-22 03:36:21
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Signum function
Hi;
I would use the sgn(z).
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#7 2012-10-22 03:38:28
- Wink
- Guest
Re: Signum function
Then what is csgn for?
#8 2012-10-22 03:42:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Signum function
Hi;
The guys at Waterloo say:
The csgn function is used to determine in which half-plane ("left" or "right") the complex-valued expression or number x lies.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
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