MATH 215 Midterm: exam1f11sol
Document Summary
Instructions: the exam consist of 6 problems for a total of 68 points. Please look through the exam booklet and make sure it has eleven pages. The last page is blank and is to be used as scratch paper. I: the exam duration is 90 minutes, no calculators are allowed, for multiple choice problems there is no partial credit. For all other problems, show all your work to receive full credit: make sure your answers are clearly marked (circled or boxed). You may find some of the following formulas useful (but probably not all of them: sin2 (x) + cos (x) = 1 and cos(2x) = cos 2 (x) 2 sin2 (x: sin(2x) = 2sin(x)cos(x) and sin 2 (x) 2: cos(it/3) = 1/2 and sin(it/3) = . j3/2, cos(it/4) = . O. esc (x) = esc (x) cot(x) : ft sec(t, to tan(o, t. cot(r) sec(t) tan(t). sec 2 (o).
