2 2 2 0 2 5. Let L be a linear mapping with [L] = 2 1 2 and let B = 1 , 1 , 1 2 1 1 2 (a) Find [L] B. 3 (b) Determine L(:E') Where [53' 3 = 1 by rst calculating [L(53')]B. 4 : (c) Check your answer in part (b) by rst calculating :E' and then calculating L(:c)