Difference between revisions of "Legendre P"

From specialfunctionswiki
Jump to: navigation, search
Line 9: Line 9:
 
\end{array}$$
 
\end{array}$$
  
[[File:Legendrepolynomials.png|450px]]
+
<div align="center">
 +
<gallery>
 +
File:Legendrepolynomials.png|Graph of $P_n$ on $[-4,4]$ for $n=0,1,2,3,4,5$.
 +
</gallery>
 +
</div>
  
 
{{:Orthogonal polynomials footer}}
 
{{:Orthogonal polynomials footer}}

Revision as of 20:18, 23 March 2015

The Legendre polynomials are orthogonal polynomials defined by the recurrence $$P_n(x) = \dfrac{1}{2^nn!}\dfrac{d^n}{dx^n}(x^2-1)^n; n=0,1,2,\ldots$$ $$\begin{array}{ll} P_0(x) &= 1 \\ P_1(x) &= x \\ P_2(x) &= \dfrac{1}{2}(3x^2-1) \\ P_3(x) &= \dfrac{1}{2}(5x^3-3x) \\ \vdots \end{array}$$

Orthogonal polynomials