SR
Segar Rogers
@segarrogers.bsky.social
Teacher. Maths. Secondary. Edinburgh.
Old enough to remember chalk.
187 followers194 following203 posts
Yeah, that dx served zero purpose when I was learning calculus. Notation for the sake of it!!
I'm sure it FELT like notation for the sake of it at the time, but you do need it to help keep track of what happens when you do substitution.
SR
Segar Rogers
@segarrogers.bsky.social
Teacher. Maths. Secondary. Edinburgh.
Old enough to remember chalk.
187 followers194 following203 posts