Saturday, January 6, 2018

mathematics - I'm trying to create a magic square


I'm having trouble trying to make a $3\times3$ magic square with magic number $12$ and I can't figure it out.


Can you please help me?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...