Q1: (K=3) Estimate the limit by using one of the algebraic methods: 4- V12+x lim 1144 x-4 Q2: (K=3, C=3) 18 If y = 5u + 3u 1 and u= x+5 dx dy find when x = 2. Q3: A. (T=5) Consider the function f(x) a. For what values of x is f discontinuous? b. At each point where fis discontinuous, determine the limit of f(x), if it exists. a. b. B. Determine the derivative, and give your answer in a simplified form. y= (2x-5)(x+1)