(4) Suppose that t1!(=)= f (2:) 9 (a?) and f( ) :r 'U a: = ( ) m) where f (at) and g(:r) are graphed below (the graph of f is blue, the graph of g is red) y a Find at" 4 . Show how 11 et our answer. yo 3 Y (b) Find 1:\" (1). Show how you get your answer. (5) Differentiate the foowing. Simphfy answers as appropriate. 8 (a) y = em+2 (b) f(t}=s% (c) f(t}= 35 (6) Let f (at) = $383. Find both f'(:r) and f\" (2:)