Drew Christianson
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 Sep22 suggested approved edit on CORE 1, Expanding and Simplifying - HELP? Sep20 awarded Critic Sep14 comment What is the difference between the rowspace and the columnspace in linear algebra? @weezybizzle Define what what you mean by solution space. Do you mean the space the row/column space lives in? In that case, column space is a subspace of $$\mathbb{R}^{m}$$ for some m x n matrix, and the row space is a subspace of $$\mathbb{R}^{n}$$ Sep14 revised What is the difference between the rowspace and the columnspace in linear algebra? added 6 characters in body Sep14 comment twice differentiable function (question from exam) @rick, any indication that you've worked on this problem yourself would most likely generate a much greater response from the community. No one here wants to do your homework for you, but most people would be willing to teach you how to do it yourself. That being said, you may be so lost you have no idea of where to begin. That's ok too, just communicate that. Sep14 answered What is the difference between the rowspace and the columnspace in linear algebra? Sep11 answered Difference between one to one function and one to one correspondence Sep8 awarded Supporter Sep8 comment Tranforming 2D outline into 3D plane What is your end goal? If you want the user's (2D) shape to be interpreted as a plane in 3-space, I think you're going to have to make some additional assumptions. As it stands, the sketch you provided could be a rectangle angled away from the camera, or a trapezoid parallel to the plane of the camera. More specifically I suppose, what role does the rectangle at at (0,0,0) play? Sep8 comment Can we consolidate the definition of “critical point” in one-variable calculus? Whoops, that's an embarrassing mistake for my first answer here. What I get for typing quickly and trusting Lion to spell check I suppose. Thanks. Sep8 revised Can we consolidate the definition of “critical point” in one-variable calculus? added 4 characters in body Sep8 awarded Teacher Sep8 answered Can we consolidate the definition of “critical point” in one-variable calculus? Sep7 awarded Editor Sep7 revised Fibonacci modular results spelling/grammar corrections Sep7 suggested approved edit on Fibonacci modular results Sep7 awarded Analytical