The range of m is [- 1, +∞), which means-1≤ m.
The range of m is (-1, 5), which means-1
The range of m is (-1, +∞), which means-1
The range of m is (-1, 5), which means-1
The value range of m is (-∞, 5), which means m < 5.
If it is (-∞,+∞), it means that m can take any value.
Parentheses can get that value, parentheses can't get that value, they can only be infinitely close.
Parentheses can only be used on infinite edges.
+∞ means positive infinity,
-∞ means negative infinity.