discrim
discriminant of a polynomial
Calling Sequence
Parameters
Description
Examples
discrim(p, x)
p
-
polynomial in x
x
independent variable
If d=degreep,x and a=lcoeffp,x then the discriminant is
−1dd−12resultantp,ⅆpⅆx,xa
p≔ax2+bx+c
discrimp,x
−4ac+b2
l≔5x2+x−1
discriml,x
21
solvel,x
−110+2110,−110−2110
k≔x22−x+3
k≔12x2−x+3
discrimk,x
−5
solvek,x
1+I5,1−I5
See Also
degree
lcoeff
resultant
solve
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