su11_prelim2 - Math 1910 Prelim II Your Name This exam has...

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Math 1910: Prelim II (July 21, 2011)Your Name:This exam has 9 pages with 7 problems adding up to 100 points. If you needextra space, you can use the other side of each page.No calculators or books are allowed.Please show all of your work (including the intermediate steps).Writingclearly and legibly will improve your chances of receiving the maximum creditthat your solution deserves.Good luck!Problem #Max ptsEarned125210310415515610715Total100Academic Integrity is expected of all students of Cornell University at alltimes, whether in presence or absence of members of the faculty.Understanding this, I declare I shall not give, use, or receive unauthorizedaid in this examination.Signature of the Student:Trigonometric Formulassin 2x= sinxcosxcos 2x= cos2x-sin2x= 2 cos2x-1 = 1-2 sin2xcos (u+v) = cosucosv-sinusinvcos (u-v) = cosucosv+ sinusinvcosucosv=12(cos (u-v) + cos (u+v))sinusinv=12(cos (u-v)-cos (u+v))sin (u+v) = sinucosv+ cosusinvsin (u-v) = sinucosv-cosusinvsinucosv=1

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