9. Recall that we can define an inner product on the set of piecewise continuous functions PC [a, b] as follows: a. (fig) = ["f(x = and we can define a norm on the same set as: ||f|| = √(f, f) Legendre polynomials arise as solutions to a differential equation (1 – t²)y" — 2ty' + n(n + 1)y = 0 Where an explicit formula for the polynomials is given by: 1 dn -(t²-1) n b. P₂ (t): f(x)g(x)dx = a 2nn! dtn 3 — Show he Legendre polynomials P₂ (t) = ² and P₂ (t) = t³-t are orthog nal on the interval [-1,1]. 2 Compute the norm: ||P3 (t)|| on the same interval.

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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9. Recall that we can define an inner product on the set of piecewise continuous
functions PC [a, b] as follows:
a.
(f,g) = f*f(x)g(x)dx
and we can define a norm on the same set as:
||f|| = √(f, f)
Legendre polynomials arise as solutions to a differential equation
(1 - t²)y" — 2ty' + n(n + 1)y = 0
Where an ex licit formula for the polynomials is given by:
1 dn
P₁ (t) =
-(t²-1)"
t² — and P3 (t) = t³ - ²/t
b.
2"n! dtn
Show the Legendre polynomials P₂ (t)
orthog nal on the interval [-1,1].
a
Compute the norm: ||P3 (t)|| on the same interval.
t are
Transcribed Image Text:9. Recall that we can define an inner product on the set of piecewise continuous functions PC [a, b] as follows: a. (f,g) = f*f(x)g(x)dx and we can define a norm on the same set as: ||f|| = √(f, f) Legendre polynomials arise as solutions to a differential equation (1 - t²)y" — 2ty' + n(n + 1)y = 0 Where an ex licit formula for the polynomials is given by: 1 dn P₁ (t) = -(t²-1)" t² — and P3 (t) = t³ - ²/t b. 2"n! dtn Show the Legendre polynomials P₂ (t) orthog nal on the interval [-1,1]. a Compute the norm: ||P3 (t)|| on the same interval. t are
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