A question reads:(adsbygoogle = window.adsbygoogle || []).push({});

Let V be a vector in an inner product space V

show that ||v|| >= ||proj(u) v|| holds for all finitie dimensional subspaces of U.

Hint: Pythagorean Theorm.

Okay... where on earth do i begin?

I thought perhaps I should expand the RIGHT side of the equation, but that dosn't seem to be getting me anywhere really.

The LEFT side seems pretty useless too, so im stuck trying to show that the RIGHT side is >= ...

anybody have any ideas?

Thanks

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# Homework Help: Inner Product once again :S

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