12 Basic Functions of Calculus 

Identity Function f(x)= x

Squaring Function f(x) = x^2

Cubing Function f(x) = x^3

Exponential Function f(x) = e^x

Logarithmic Function f(x) = lnx

Square Root Function f(x) = √x

Absolute Value Function f(x) = lxl

Cosine Function f(x) = Cos(x)

Rational Function f(x) = 1/x

Logistic Function f(x) = 1/1+e^-x

Sine Function f(x) = sin(x)

Greatest Integer Function f(x) = [x] = int(x)