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<title>Bessel Functions - GNU Scientific Library -- Reference Manual</title>
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<h3 class="section">7.5 Bessel Functions</h3>
<p><a name="index-Bessel-functions-268"></a>
The routines described in this section compute the Cylindrical Bessel
functions J_n(x), Y_n(x), Modified cylindrical Bessel
functions I_n(x), K_n(x), Spherical Bessel functions
j_l(x), y_l(x), and Modified Spherical Bessel functions
i_l(x), k_l(x). For more information see Abramowitz & Stegun,
Chapters 9 and 10. The Bessel functions are defined in the header file
<samp><span class="file">gsl_sf_bessel.h</span></samp>.
<ul class="menu">
<li><a accesskey="1" href="Regular-Cylindrical-Bessel-Functions.html">Regular Cylindrical Bessel Functions</a>
<li><a accesskey="2" href="Irregular-Cylindrical-Bessel-Functions.html">Irregular Cylindrical Bessel Functions</a>
<li><a accesskey="3" href="Regular-Modified-Cylindrical-Bessel-Functions.html">Regular Modified Cylindrical Bessel Functions</a>
<li><a accesskey="4" href="Irregular-Modified-Cylindrical-Bessel-Functions.html">Irregular Modified Cylindrical Bessel Functions</a>
<li><a accesskey="5" href="Regular-Spherical-Bessel-Functions.html">Regular Spherical Bessel Functions</a>
<li><a accesskey="6" href="Irregular-Spherical-Bessel-Functions.html">Irregular Spherical Bessel Functions</a>
<li><a accesskey="7" href="Regular-Modified-Spherical-Bessel-Functions.html">Regular Modified Spherical Bessel Functions</a>
<li><a accesskey="8" href="Irregular-Modified-Spherical-Bessel-Functions.html">Irregular Modified Spherical Bessel Functions</a>
<li><a accesskey="9" href="Regular-Bessel-Function-_002d-Fractional-Order.html">Regular Bessel Function - Fractional Order</a>
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<li><a href="Regular-Modified-Bessel-Functions-_002d-Fractional-Order.html">Regular Modified Bessel Functions - Fractional Order</a>
<li><a href="Irregular-Modified-Bessel-Functions-_002d-Fractional-Order.html">Irregular Modified Bessel Functions - Fractional Order</a>
<li><a href="Zeros-of-Regular-Bessel-Functions.html">Zeros of Regular Bessel Functions</a>
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