Question

WHY ?! (in vectors)
\(\large (a×b)×c\neq a×(b×c)\)

Answer 1

Why do you think it should be true?

Answer 2

mm its ovs its not true , but geometrically how to show that ?

Answer 3

You need to show it geometrically? You could just calculate it out with general vectors:
\[\bar a = <a_x,a_y,a_z>\]\[\bar b = <b_x,b_y,b_z>\]\[\bar c = <c_x,c_y,c_z>\]

Answer 4

well i can use a counter example , but i wanna it geometrically
like need to know whats the meaning of it :)

Answer 5

What's a cross product? It's the area of a parallelogram formed by two vectors and has a direction perpendicular to them.

Answer 6

well , its ovx that ita also counter exampl