finding roots for x4 - 5x^2 + 6 = 0

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.
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Joined: Sat Jul 11, 2009 8:02 pm

Re: finding roots for x4 - 5x^2 + 6 = 0

Postby prioris » Wed Jul 15, 2009 9:14 pm

jesse cleared things up

here is an online quartic equation calculator i used

it did come out to the book answer

so the book had a misprint

and it was a higher level equation

no wonder

>that [(-sqrt)] and [-(sqrt)] are two very different things

since i don't have a square root sign on my keyboard, i had to translate it thru keyboard characters

in the realm of complex numbers, the former is correct also although
it would usually be replaced with "sqrt(3)i"

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