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11242008, 10:21 AM  #17  
 
Banned Join Date: Mar 2008
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11242008, 05:02 PM  #18  
 
Class 1M Laser Join Date: Oct 2008
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e^(i*x)=cos(x)+i*sin(x) e^(i*pi)=cos(pi)+i*sin(pi)=1. It gets used a lot when solving quantum mechanics problems. My college math teacher loved that equation  it's got every important mathematical value in it.  
11242008, 11:14 PM  #19  
 
Class 3R Laser Join Date: Aug 2007
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the thing is that when working with electronics you call it 'j' because you call 'i' the current intensity and it could create confusion. i've never seen that formula, not even in college....i went past thru taylor, maclaurin, series, etc... but never seen euler =([/quote] I know, that's what I was saying. It is the same number, but electrical engineers insist on using a different letter than everyone else. To everyone else on earth, that number is "i". To electrical engineers, it's "j". They use "i" for current, yes, but they also use "j" for current density, or other things as well. You still have to use context to see what each one stands for no matter what, so why can't they just do what everyone else does and use "i" for imaginary numbers? Since we're still having to use context to decide what something means, then they might as well have the context be the same as every other discipline on campus.  
11252008, 12:09 AM  #20  
 
Cereal Eater 
i guess it's just the way it is taught on every classroom around the world.. i'm sure there must be one or two professors that do not [s]want[/s] like using 'j'.  
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