The Airy functions are the solutions of the following second order linear differential equation:
![[Graphics:Images/index_gr_1.gif]](Images/index_gr_1.gif)
![[Graphics:Images/index_gr_3.gif]](Images/index_gr_3.gif)
Using power series techniques we can derive the following recurrence relation for the coefficients of the power series solution:
![[Graphics:Images/index_gr_5.gif]](Images/index_gr_5.gif)
Now it is easy to define the partial sums of the two linearly independent power series solutions.
![[Graphics:Images/index_gr_6.gif]](Images/index_gr_6.gif)
![[Graphics:Images/index_gr_7.gif]](Images/index_gr_7.gif)
Below we plot some of the partial sums of one of the power series solutions to get an idea of the plot of the convergent series.
![[Graphics:Images/index_gr_8.gif]](Images/index_gr_8.gif)
![[Graphics:Images/index_gr_9.gif]](Images/index_gr_9.gif)
![[Graphics:Images/index_gr_11.gif]](Images/index_gr_11.gif)
![[Graphics:Images/index_gr_12.gif]](Images/index_gr_12.gif)