Matrix transformation

[Nope]

Homework Statement

just wondering, what exactly is T²(v)=0?
is it T(T(v))=0 or T(v)*T(v)=0??

Homework Equations

The Attempt at a Solution

 

[Mark44]

Homework Statement

just wondering, what exactly is T²(v)=0?
is it T(T(v))=0 or T(v)*T(v)=0??

Homework Equations

The Attempt at a Solution

It's T(T(v)) = 0