二次不等式が「解をもたない」条件の求め方

id	30378
user_id	1056
roll_id	1799
order	5
language	ja
description
image_id	0
tag	[quadratic_inequality:0.5][no_solution:0.3][discriminant:0.2]
created_time	1772790361
updated_time	1772790361