Main points:
• Many of the equations we would like to solve, don’t have solutions
○ Therefore we look for approximate solutions
○ Finding an approximate solution is often easier in vector format
• Dot product (=scalar product)
○ The dot product of two vectors is zero if the two vectors are perpendicular (or orthogonal)
• Residual vector
Challenges:
I had a bit of troubles understanding residual vectors, mainly just the whole logic behind it. Partly it was due because I still have problems understanding what the terminology means.
Reflection:
The topics seemed ok, but I really need to spend more time with them and also be really alert on tomorrow's class. I am mainly looking forward to go through problems in tomorrow's class as I think the new things are otherwise understandable.
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