1.4.15 Matrix Transformations

Condition: for matrices \ (s = \ left (\ begin {array} {cc} 0 & 2 \\ 3 &1 \\ -1 & 0 \ end {arry} \ right), f = \ left (\ begin} {ll} 1 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 & 2 \\ 2 & 3 \ End {Array} \ Right) \): A) Find the matrix \ (A \), for which the work of matrices \ (s^{t} \ cdot a \ cdot f \); b) Find the work of matrices \ (s^{t} \ cdot a \).