Let L2[0, 1] be all bounded Riemann integrable functions [0, 1] → R with inner product (f, g) Split [0, 1] into intervals of length and on the k'th of them let Hnk be V2n on the first half of the interval, and -V2" on the second half. More precisely, So f(x)g(x) dx. Define functions Hnk as follows: V2", k+ < x < k 2n 2n Hn,k(x) = < x < k+1 2n 2", 2n 0, otherwise for n > 0, 0 < k < 2". Show that the Hn.k are orthonormal.

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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Q3. Math real analysis

(3) Let L²[0, 1] be all bounded Riemann integrable functions [0, 1] → R with
inner product (f,g)
Split [0, 1] into intervals of length and on the k'th of them let Hn.k be
V2n on the first half of the interval,
precisely,
= Sr f(x)g(x) dx. Define functions H
n,k as follows:
2n
and -V2" on the second half. More
k+
< x <
k
2n.
2n
k+
1
Hn,k (x) =
2n,
2
2n
< x <
k+1
2n
0,
otherwise
for n > 0, 0 < k < 2". Show that the Hn.k are orthonormal.
Transcribed Image Text:(3) Let L²[0, 1] be all bounded Riemann integrable functions [0, 1] → R with inner product (f,g) Split [0, 1] into intervals of length and on the k'th of them let Hn.k be V2n on the first half of the interval, precisely, = Sr f(x)g(x) dx. Define functions H n,k as follows: 2n and -V2" on the second half. More k+ < x < k 2n. 2n k+ 1 Hn,k (x) = 2n, 2 2n < x < k+1 2n 0, otherwise for n > 0, 0 < k < 2". Show that the Hn.k are orthonormal.
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