Arithmetic, functions, variables, unit conversions — with step-by-step breakdown
+ − * / ^ %
() parentheses
x = 5 → define variable
pi = 3.14159…
e = 2.71828…
phi = 1.61803…
sin cos tan
sqrt abs pow
log (base 10) ln (natural)
ceil floor round
min(a,b) max(a,b)