¿How we can obtain the module of from m and the module of ?. That is to say ¿how much does | | value?
We remember that we define like a vector that it has:
1) Direction : The same one that if m is positive
Opposite to the from if m is negative
2) Module: the module of multiplied by the absolute value of m
We can write therefore | |= |m|| |, where |m| it wants to say absolute value of m, and | | wants to say module of .
It's important to observe, for example, that module of -3 is not -3 multiplied by the module of , it is 3 by the module of . |