ocr: Answers to the Ma 115 Final Examination of 12/21/88 PROBLEM 1. a) (2-5r)7 -4 b)2 2e27sec?(e2z) c)y'+cosyy- = (441)soy 1l (1+cosy 2r y)(22+1) d) 11+2:1/1+21)-1 e) de = EU sigtay" (sine) PROBLEM 2. a)-ie-r+c b) E c)32 d)f e)1ter? PROBLEM 3. a) 2r 3V3 b)0 c) Does not exist. The left hand limit is - 8 while the righthand one is 0o. d)0 e)12. The answer is the limit of 2 as I approaches 2 from the right. PROBLEM 4. a) L-17 I-2 = 24 b) The minimum is y= ate-2 PROBLEM 5. a) sectant sec't I which simplifies to sint b)y=1+z2 from the identity sec'e=1+tan28
