Differential Equations

First Order Linear

Notation

∈ ∉ ∀ ∃ ≤ ≥ ≠ ∅ Σ Π π ∞ ⊆ ∤ ± ≅ ≡

i.e. in other words
e.g. for example
ex. example
sps suppose
■ end of proof
!contradiction!
-> <- implies instead of => <=
{} under label
gcd() greatest common divisor ex. gcd(5,10)=5 gcd(24,36)=12
lcm() least common multiple ex. lcm(36,12)=36 lcm(18,12)=36
w/ with
w/o without
b/c because
equv equivalent to

Memo

Reference

Micheal Penn’s Youtube Channel