This is documentation for Mathematica 5, which was
based on an earlier version of the Wolfram Language.

 3.2.6 Elementary Transcendental Functions Elementary transcendental functions. Mathematica gives exact results for logarithms whenever it can. Here is . In[1]:= Log[2, 1024] Out[1]= You can find the numerical values of mathematical functions to any precision. In[2]:= N[Log[2], 40] Out[2]= This gives a complex number result. In[3]:= N[ Log[-2] ] Out[3]= Mathematica can evaluate logarithms with complex arguments. In[4]:= N[ Log[2 + 8 I] ] Out[4]= The arguments of trigonometric functions are always given in radians. In[5]:= Sin[Pi/2] Out[5]= You can convert from degrees by explicitly multiplying by the constant Degree. In[6]:= N[ Sin[30 Degree] ] Out[6]= Here is a plot of the hyperbolic tangent function. It has a characteristic "sigmoidal" form. In[7]:= Plot[ Tanh[x], {x, -8, 8} ] Out[7]= There are a number of additional trigonometric and hyperbolic functions that are sometimes used. The versine function is defined as . The haversine is simply . The complex exponential is sometimes written as . The gudermannian function is defined as . The inverse gudermannian is . The gudermannian satisfies such relations as .