Mathematics for IGCSE & O level - Inequalities (Section 2 - No. 14)
Which compound inequality is represented by the graph showing the values of x between -1 and 4, including -1 but not 4?
-1 < x ≤ 4
-1 ≤ x < 4
-1 < x < 4
-1 ≤ x ≤ 4
คำอธิบาย
Closed circle on -1 and open circle at 4 is -1 ≤ x < 4