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#1 2012-10-21 16:36:17

Leroy
Guest

Logarithm

Can one do logarithm of imaginery number?please explain.

#2 2012-10-21 19:47:44

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,651

Re: Logarithm

hi Leroy,

Yes you can.  See

http://en.wikipedia.org/wiki/Complex_logarithm

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#3 2012-10-21 23:30:27

Leroy
Guest

Re: Logarithm

There is no example in that link,it will be great if you show an example

#4 2012-10-21 23:54:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,252

Re: Logarithm


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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#5 2012-10-22 00:01:50

Leroy
Guest

Re: Logarithm

So,let me try, is this correct
ln(3+4i)=ln5+atan(4/3)i

#6 2012-10-22 00:12:21

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,252

Re: Logarithm

Hi;

That is correct. Very good!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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#7 2012-10-22 01:56:00

Leroy
Guest

Re: Logarithm

Thank you a lot.

#8 2012-10-22 03:37:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 105,252

Re: Logarithm

Hi;

You are welcome!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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