Exercises
[1MS]If \(A,B\) then the directional derivative of \(\exp \) at the point \(A\) in the direction \(B\) is \(B\exp (A)\), i.e.
\[ \frac{d\hskip5.5pt}{d{t}} \exp (A+tB)|_{t=0}=B\exp (A)~ ~ . \]
[1MS]If \(A,B\) then the directional derivative of \(\exp \) at the point \(A\) in the direction \(B\) is \(B\exp (A)\), i.e.