# Kelvin function of the 2nd kind (chart) Calculator

## Calculates a table of the Kelvin functions of the second kind kerv(x) and keiv(x) and draws the chart.

 order v real number [ initial value x increment repetition ]
 $\normal Kelvin\ functions\\\hspace{60}of\ the\ 2nd\ kind\ ker_\nu(x),\ kei_\nu(x)\\[10](1)\ x^2y''+xy'-(ix^2+\nu^2)y=0\\\hspace{25} y=c_1{ker_\nu(x)}+ic_2{kei_\nu(x)}\\[10](2)\ ker_\nu(x)+ikei_\nu(x)={\large e^{-i\frac{\nu\pi}{2}}}K_\nu(x{\large e^{i\frac{\pi}{4}}})\\[10]$

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