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a ^ b - power
a % b - modulus
x! - factorial
abs(x)
ceil(x)
floor(x)
trunc(x)
ln(x)
exp(x)
sin(a)
cos(a)
tan(a)
asin(x)
acos(x)
atan(x)
atan2(y,x)
sinh(a)
cosh(a)
tanh(a)
sqrt(a)
gcd(a,b,...)
lcm(a,b,...)
mean(a,b,...)
fib(n)
e
PI
Date
Time