Formula:KLS:14.05:72

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q - n ( 1 - q n ) ( 1 - q n + 1 ) x 2 y ( x ) = B ( x ) y ( q x ) - [ B ( x ) + D ( x ) ] y ( x ) + D ( x ) y ( q - 1 x ) superscript 𝑞 𝑛 1 superscript 𝑞 𝑛 1 superscript 𝑞 𝑛 1 superscript 𝑥 2 𝑦 𝑥 𝐵 𝑥 𝑦 𝑞 𝑥 delimited-[] 𝐵 𝑥 𝐷 𝑥 𝑦 𝑥 𝐷 𝑥 𝑦 superscript 𝑞 1 𝑥 {\displaystyle{\displaystyle{\displaystyle q^{-n}(1-q^{n})(1-q^{n+1})x^{2}y(x)% {}=B(x)y(qx)-\left[B(x)+D(x)\right]y(x)+D(x)y(q^{-1}x)}}}

Substitution(s)

D ( x ) = ( x - q ) ( x - c q ) 𝐷 𝑥 𝑥 𝑞 𝑥 𝑐 𝑞 {\displaystyle{\displaystyle{\displaystyle D(x)=(x-q)(x-cq)}}} &

B ( x ) = q ( x - 1 ) ( x - c ) 𝐵 𝑥 𝑞 𝑥 1 𝑥 𝑐 {\displaystyle{\displaystyle{\displaystyle B(x)=q(x-1)(x-c)}}} &

y ( x ) = P n ( x ; c ; q ) 𝑦 𝑥 big-q-Legendre-polynomial-P 𝑛 𝑥 𝑐 𝑞 {\displaystyle{\displaystyle{\displaystyle y(x)=P_{n}\!\left(x;c;q\right)}}}


Proof

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Symbols List

& : logical and
P n subscript 𝑃 𝑛 {\displaystyle{\displaystyle{\displaystyle P_{n}}}}  : big q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Legendre polynomial : http://drmf.wmflabs.org/wiki/Definition:bigqLegendre

Bibliography

Equation in Section 14.5 of KLS.

URL links

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