| Orthogonality |
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| q | In Vector Form: |
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| q | In Continuous Function Form |
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| q | A Set of Orthogonal Functions fn(x) |
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| (1) The inner product of |
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| orthogonal vectors or functions |
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| is
zero. |
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| (2) The inner product of an |
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| orthogonal vector or function |
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| with itself is one. |
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