I could find excel functions for the calculation of imaginery number on web.
Therefore my problem about the calculation was solved.
Those functions of complex, imsum, improduct,imsub,imdiv, imreal and imaginery are so useful.
I do not have to worry about the negative number in root .
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DeleteIs your job Computational Fluid Dynamics ? It seems difficult theme.
ReplyDeleteI can understand by knowledge that the imaginary number is important for many calculation. But, I can't understand by my actual feeling that the imaginary number is applied for real event. Because "imaginary" means "not real".
actual feeling:実感
DeleteI used the complex number to solve a cubic equation.
ReplyDeleteIf the imaginery number of the complex number is very small,
the complex number can be regarded as a real number.
Of course, that is not correct actually.
But it was enough for my approximate calculation.