104/184 Quiz #3 - P1 October 22/23 First Name: Last Name: Student-No: Section: Grade: Very short answer questions 1. 2 marks Each part is worth 1 mark. Please write your answers in the boxes. (a) Differentiate ln(x2 + cos x) Answer: (b) Evaluate tan 2π 3 Answer: Short answer questions — you must show your work 2. 4 marks Each part is worth 2 marks. dq (a) Find the if pq + ep = ln q dp Answer: √ (b) The cost function of a compnay is given by C = 80 + 10 4 q. Approximate the cost of producing the 82nd unit. Answer: Long answer question — you must show your work 3. 4 marks Find the equation of the tangent line to y = (x3 + 1)ln x when x = 1. Please place a box around your final answer.