I just had a class in Analysis.
My professor said that √ is defined to get positive number.
√9=3 that is arithmetics.
when you have x^2=9, you get x = +or -√9 = +or-3 that is algebra.
Note: in both case √9=3
For the complex number
√-9= √- * √9 = i3
Homework Statement
Hi, this is the first time I post a thread in this forum.
I am not sure if I could post this question here since it is not a homework problem.
I have trouble understanding two boundary condition between nonconductor and conductor from Maxwell's equations in dynamic case...