As a person who often struggled in math for perhaps many reasons, this was a common issue for me.
First you define things, then you use them.
No other rule makes sense generally, and I challenge anyone to prove me wrong.
Now is a simple set like { 2x : x ∈ ℝ } going to confuse me, probably not... but when variables are just thrown around all willy nilly, I get confused pretty quick.
I never understood list comprehensions, and was always slightly resentful of (in my mind) their illogical ordering until I realized they were mimicking mathematical expressions.
First you define things, then you use them.
No other rule makes sense generally, and I challenge anyone to prove me wrong.
Now is a simple set like { 2x : x ∈ ℝ } going to confuse me, probably not... but when variables are just thrown around all willy nilly, I get confused pretty quick.