9
clamore
2y

u is the coordinate of the point u in the u referential. PLEASE THERE ARE 26 LETTER. How about you use differen letter for different thing fuckin idiot

Comments
  • 5
    Mathematicians have invented the subscript so that they can use the same letter again and again and still refer to different things :)
  • 1
    Why don't u do that?
  • 0
    Isn't that the vector or u and v?
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