HOW DO WE DETERMINE A WHETHER A POLYNOMIAL f(x) < 0 or not
{WITHOUT USING GRAPHS !!!!!!!!!)
I MEAN IF V CONSIDER A QUAD EQN THEN f(x) > 0 if a>0 & D <0
& reverse for f(x) < 0
Is this condition true always ???????????
In all quadratic equations???????????????
-
UP 0 DOWN 0 0 2
2 Answers
39yes of course , this condition is valid for all quadratic equations (with real coefficients )
and yes conditions for f(x)<0 are not reverse. they r a<0 and D<0
and there is no hard and fast rule as to find wether a polynomial is less than 0 or not. it depends on the polynomial u r working with and the particular interval in which u r interested
4Thanks Bhargav
But I have a prob with this
" and yes conditions for f(x)<0 are not reverse. they r a<0 and D<0 "
R U sure I somehow remembered it the other way ???? ( a<0 D>0)