mapping functions

  1. S

    Mapping a function

    Homework Statement [/B] Hello all, thank you in advance for your help. Please let me know if this is the wrong forum. My problem: Let x= a + b√2 and let y= the 2 x 2 matrix {a 2b}{b a}. Show that x maps to y. Homework Equations [/B] As I see it, for multiplication, this is pretty...