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What are the twelve basic functions?

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Apr 27, 2015

Identity: $f (x) = x$ $f(x) = x$
Square: $f (x) = x^{2}$ $f(x) = x^2$
Cube: $f (x) = x^{3}$ $f(x) = x^3$
Reciprocal: $f (x) = \frac{1}{x} = x^{- 1}$ $f(x)=1/x = x^(-1)$
Square Root: $f (x) = \sqrt{x} = x^{\frac{1}{2}}$ $f(x) = sqrt(x) = x^(1/2)$
Exponential: $f (x) = e^{x}$ $f(x) = e^x$
Logarithmic: $f (x) = ln (x)$ $f(x) = ln(x)$
Logistic: $f (x) = \frac{1}{1 + e^{- x}}$ $f(x) = 1/(1+e^(-x))$
Sine: $f (x) = sin (x)$ $f(x) = sin(x)$
Cosine: $f (x) = cos (x)$ $f(x)=cos(x)$
Absolute Value: $f (x) = | x |$ $f(x) = abs(x)$
Integer Step: $f (x) = int (x)$ $f(x)= "int"(x)$

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