2.8 The Derivatives as a Functions 151+3I1 3 1. Given that 113} = E , find a funetienfand a number :1 Such that the limit on the left hand side I .1: can be interpreted as f[a] _ 2. Use the definition of derivative to nd f 1.1;] if f [1] = +1 _ [x + 2}' 3.1 Rules for Differentiation! _ . . 3:3 3x 1 mg f [x] if f[.1'] = , _ .t' 2 mg the eguation nfthe tangent line to the graph of f[.t'] = 13:4 + 3x3 2.1: at .1: = 1. 2