Any one who knows how to proof the distributive law. please help me?

hay guys i have a big problem with proofing the distributive law.


i dont know how to proof it in a easy way , the main formula is:





vector a X( vector b+ vector c )= vector a X vector b+ vector a X vector c.


i just have to proof that.





big X is not the sign of multiplaction, its just in vectors. i hope you guys know what i mean.

Any one who knows how to proof the distributive law. please help me?
Apply the law to the individual coordinates. Now, use the distributive law of scalars. Q.E.D.





Does that do it?

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