3. Prove that if r, y E RP, then ||r + yl|2 = ||x||2 + |ly||² holds if and only if r y = 0. 4. Prove that for the vector space V = C[a, b] of all continuous functions defined on the interval (a, b), the operation fg% D | f(x)g(x)dx is an inner product on V.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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3. Prove that if 1, Y E RP, then ||x + y||² = ||x||² + ||y||² holds if and only if x ·y = 0.
4. Prove that for the vector space V = C[a, b] of all continuous functions defined on the
interval [a, b), the operation f g D
| f(x)g(x)dx is an inner product on V.
a.
Transcribed Image Text:3. Prove that if 1, Y E RP, then ||x + y||² = ||x||² + ||y||² holds if and only if x ·y = 0. 4. Prove that for the vector space V = C[a, b] of all continuous functions defined on the interval [a, b), the operation f g D | f(x)g(x)dx is an inner product on V. a.
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Inner product space (Definition)

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