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12/06/11 04:25:46 (3 years ago)
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rtoy
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 1  = Cosine Integral Function = 
 2  
 3  {{{(cosintegral z)}}} 
 4  
 5  The cosine integral function defined by 
 6  
 7  {{{ 
 8  Ci(z) = integrate((cos(t)  1)/t, t, 0, z) + log(z) + %gamma 
 9  }}} 
 10  
 11  where {{{%gamma}}} is the EulerMascheroni constant. 
 12  
 13  See also [wiki:SinIntegral]. 