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I have a linear algebra exam tomorrow and am finding it hard to figure out how to calculate an orthogonal projection onto a subspace.

Here is the actual question type i am stuck on:

I have spent ages searching the depths of google and other such places for a solution but with no look. I am really stuck and it would be greatly appreciated if someone could maybe give me a helping hand and try explain this to me.

Thanks.

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# Homework Help: Orthogonal Projection Onto a Subspace?

**Physics Forums | Science Articles, Homework Help, Discussion**