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Parseval's formula

Orthogonality questions (see attached)

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To write x in terms of u1, u2 and u3. Remember the expansion formula:
x= (x|u1) u1 + (x|u2) u2 + (x|u3) u3, where (a|b) is the inner product, ...

Solution Summary

These questions involve Parseval's formula and orthonormal basis

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