Mathematics for IGCSE & O level - Inequalities (Section 1 - No. 17)
What is the difference between 'a < b' and 'a ≤ b'?
Nothing; they are the same.
'a ≤ b' includes the possibility that a equals b.
'a < b' includes the possibility that a equals b.
One is always positive, the other is always negative
Объяснение
'a ≤ b' means 'a' is less than or equal to 'b'; unlike a < b