OFFSET
1,2
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