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154E3-S2011 - MA 15400 Spring 2011 Exam 3 C LAW OF SINES...

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MA 15400 Spring 2011 Exam 3 LAW OF SINES LAW OF COSINES sin α a = sin β b = sin γ c c 2 = a 2 + b 2 2 ab cos γ ANGLE BETWEEN TWO VECTORS: cos θ = ( r a ) ( r b ) r a r b α β γ A B C c a b
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MA 15400 Exam 3 Spring 2011 Covers Lessons 23 to 34, which starts with question #53 of Section 7.6 and then all of Sections 8.1, 8.2, 8.3, and 4.5. 1 Sketch the function and answer questions 1 and 2: ( ) 15 2 8 2 2 2 = x x x x x f 1. What are the vertical asymptotes of the function? A. 5, 3 x x = − = B. 4 , 2 = = x x C. 5, 3 x x = = − D. 4 , 2 = = x x E. None of the above 2. In which intervals is ( ) ? 0 > x f
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MA 15400 Exam 3 Spring 2011 Covers Lessons 23 to 34, which starts with question #53 of Section 7.6 and then all of Sections 8.1, 8.2, 8.3, and 4.5. 2 3. If 2 , 1 = s , which vector best represents –2 s ?
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