2. Parts of this problem are not related. [5] (a) Use implicit differentiation to the equation of the tangent line at P(1, 5) for the function y = 19(93): given by the equation: :53 + y l.(5:L' 4) + Q2 = 26. [5] (b) SUPPOSB that g and gr are continuous functions such that grew) = 1, and g'(7r) = 2. Evaluate lim 9(I)1/ sin(1-) 1:4}