Answer: Therefore, S(T(v)) simplifies to v.
In other words, S(T(v)) = v.
So, the correct answer is a) v.
Explanation:
If S(v) = T(v) = v for any vector v, we can determine the value of S(T(v)) by substituting T(v) into the function S.
Since T(v) = v, we can rewrite S(T(v)) as S(v). According to the given information, S(v) = v