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Bessel-Type Functions > StruveH[nu,z] > Introduction to the Struve functions


The Struve functions and appeared as special solutions of the inhomogeneous Bessel second-order differential equations:

where and are arbitrary constants and , , , and are Bessel functions.

The last two differential equations are very similar and can be converted into each other by changing to . Their solutions can be constructed in the form of a series with arbitrary coefficients:

Substitution of this series into the first equation gives the following partial solution of the inhomogeneous equation:

This solution, which appeared in an article by H. Struve (1882), was later ascribed Struve's name and the special notation .

A similar procedure carried out for the second inhomogeneous equation leads to the function , which was introduced by J. W. Nicholson (1911).