2. [8 marks] Use algebra, limit laws and/ or standard limits to evaluate the following expression. You do not have to state explicitly which limit law[s) you are using but you should specically mention which standard limits you have used. Do not use L'Hopital's rule. _ 5(cosx 1)(ezx 1) 11m x>0 3(8" + 1)x3 l3. [8 marks] Use the sandwich theorem to evaluate the following expression. _ 2 cos(n3 + 1) + (1)" 11m 4. [10 marks] Use differentiation by "first principles\" [i.e.. the limit denition of the derivative) to find %, for the following function: y = 4- exp (2(1):) ,where a is a constant You can use standard limits in your argument