Upvoting indicates when questions and answers are useful What's reputation and how do i get it Instead, you can save this post to reference later. To gain full voting privileges, We actually got this example from the book, where it used projection on w to prove that dimensions of w + w perp are equal to n, but i don't think it mentioned orthogonal projection, though i could be wrong (maybe we are just assumed not to do any other projections at our level, or maybe it was assumed it was a perpendicular projection, which i guess is the same thing). Proof of kera = imb implies ima^t = kerb^t ask question asked 6 years ago modified 6 years ago
I want to find the basis of kera ker a X2 −x3 = 0 x 2 x 3 = 0, and assigned x3 = α x 3 = α.
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