Discriminant of a quadratic equation in 2 variables

  • Thread starter Ashu2912
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  • #1
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Main Question or Discussion Point

Can anyone tell me how to calculate the discriminant of a general equation of 2 degree in 2 variables, ax[itex]^{2}[/itex]+by[itex]^{2}[/itex]+2gx+2fy+2hxy+c=0? Thanks!!!
 

Answers and Replies

  • #2
Stephen Tashi
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I've never seen a textbook that defined the descriminant for a polynomial of two variables. How do your materials define it?
 
  • #3
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In my text it is defined as abc+2gfh-a(f sq.)-b(g sq.)-c(h sq.). I just want to know how is it derived and what is it's significance and implication....
 
  • #4
Stephen Tashi
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