Cosine integral Ci(x) Calculator

Calculates the cosine integral Ci(x).

Cosine integral Ci(x)

    Cosine integral Ci(x)
    [1-7] /7Disp-Num
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    [1]  2020/02/07 01:08   Male / 60 years old level or over / A teacher / A researcher / Useful /
    Purpose of use
    testing my own Scilab function
    Comment/Request
    Some sources indicate that Ci is not defined for arg(z) = pi. May be because it is a multivalued function. Indeed, Ci(-1 + 0.0000001i) and Ci(-1 - 0.0000001i) have very similar real parts but their imaginary parts differ by almost 2*pi
    [2]  2019/11/15 14:48   Female / 20 years old level / High-school/ University/ Grad student / A little /
    Purpose of use
    Solve antenna’s exercise
    [3]  2019/07/18 12:43   Male / Under 20 years old / Elementary school/ Junior high-school student / Not at All /
    Purpose of use
    Graphing
    Comment/Request
    Good
    [4]  2010/02/25 22:03   Male / 40 level / A teacher / Very /
    Purpose of use
    For teaching
    Comment/Request
    Very good. Many interesting things with recalculations and charts in one place.
    [5]  2010/01/28 04:00   Male / More than 60 / A researcher / Very /
    Purpose of use
    physics descriptor of a particle
    Comment/Request
    Thank you
    [6]  2009/09/02 15:33   Male / More than 60 / A researcher / Very /
    Comment/Request
    Very helpfully!
    [7]  2009/02/28 02:34   Male / 30 level / A specialized student / Very /
    Purpose of use
    doing homework
    Comment/Request
    a great site

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