Math Arguments
Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.
Better Interval Notation
"I wish we had better notation for intervals. The fact that \( 3 < x < 7 \) is written as \( (3, 7) \) which looks identical to the coordinates of a point on the Cartesian plane is less than ideal. ~ Jim Doherty (@mrdardy)
What other method could we use?
BTW, square brace is less than or equals:
\( (\infty,0] \) is the same as \( x ≤ 0 \)
Desmos uses [1..8] for lists.
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Source:
Twitter
I wish we had better notation for intervals. The fact that 3 < x < 7 is written as (3, 7) which looks identical to the coordinates of a point on the Cartesian plane is less than ideal.
— Jim Doherty (@mrdardy) January 27, 2023
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