the identity function
f(x)=x
the squaring function
f(x)=x�
The cubing function
f(x)=x�
the reciprocal function
f(x)=(1/x)
the square root function
f(x)=?x
the exponential function
f(x)=e?
the natural logarithm function
f(x)=ln x
the greatest integer function
f(x)=int (x)
the absolute value function
f(x)=abs(x)
the sine function
f(x)=sin x
the basic logistc function
f(x)=(1)/(1+e??)
the cosine function
f(x)=cos(x)
f(x)=x
f(x)=x�
f(x)=b^x, when b>1
f(x)=|x|
f(x)=x�
�(x)=?x
�(x)=1/x