OFFSET
1,1
COMMENTS
FORMULA
greatest root: -(4/3) + (4/3)*sqrt(2)*cos((1/3)*arctan(sqrt(391)/11))
****
middle: -(4/3) - (2/3)*sqrt(2)*cos((1/3) arctan(sqrt(391)/11)) + 2*sqrt(2/3)*sin((1/3) arctan(sqrt(391)/11))
****
least: -(4/3) - (2/3)*sqrt(2)*cos((1/3) arctan(sqrt(391)/11)) - 2*sqrt(2/3)*sin((1/3) arctan(sqrt(391)/11))
EXAMPLE
greatest root: 0.4351172195495135109...
middle root: -1.650898528091803148...
least root: -2.784218691457710362...
MATHEMATICA
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Sep 08 2018
STATUS
approved