Professor Mumford mumford@purdue.edu Econ 360 - Fall 2012 Problem Set 1 Answers True/False (30 points) 1. FALSE If (ai ‚ bi ) : i = 1‚ 2‚ . . . ‚ n and (xi ‚ yi ) : i = 1‚ 2‚ · · · ‚ n are sets of n pairs of numbers‚ then: n n n (ai xi + bi yi ) = i=1 i=1 ai x i + i=1 bi yi 2. FALSE If xi : i = 1‚ 2‚ . . . ‚ n is a set of n numbers‚ then: n n n n n (xi − x) = ¯ i=1 n i=1 2 x2 i − 2¯ x i=1 xi + i=1 x = ¯ i=1 2 x2 − n¯2 x i where x = ¯ 1 n i=1 xi 3. TRUE If xi : i = 1‚ 2‚ . .
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6/28/2012 Number Systems Chapt. 2 Common Number Systems System Base Symbols b l Used by humans? Used in computers? Decimal 10 0‚ 1‚ … 9 Yes No Binary 2 0‚ 1 No Yes Octal 8 0‚ 1‚ … 7 No No Hexadecimal 16 0‚ 1‚ … 9‚ ‚ ‚ ‚ A‚ B‚ … F No No 1 6/28/2012 Quantities/Counting (1 of 3) Decimal 0 1 2 3 4 5 6 7 Binary 0 1 10 11 100 101 110 111 HexaOctal decimal 0 0 1 1 2 2 3 3 4 4
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Works Cited Bey‚ Amani. "Methods." Personal interview. 28 Jan. 2013. I interview Amani because she is a teenager guided by mentorship. She revealed to me how being mentored by positive‚ loving‚ and caring people has changed who she is as a person. She said “I see a big change in myself. It’s like my whole life I’ve been so angry and upset‚ and it was all because I was being misguided and I didn’t have the chance to become who I am now.” This interview helped me because It kind of showed me what
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was an obstacle for her beauty‚ making Georgiana feels ugly. Lastly‚ Georgina’s birthmark reveals Aylmer’s fear of death. Aylmer sees the birthmark as a flaw. Aylmer believes that if he removes the birthmark from Georgiana’s cheek‚ he will find the key to extend life and make her wife beautiful for him. But because of his selfishness and
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“Click‚ click‚ click” I stand up after buckling my snowboard bindings and glance out across the horizon. I see the deep blue’s of Lake Winnipesaukee and the cool icy blues over the scattered coves. I look ahead and realize that I am the last one to start down the fresh packed powder trail. Quickly I hop along to gain speed to catch up to my family. My twin brother Alex is leading the pack. He turns around gesturing the race is on‚ but he quickly flies out of sight around a bend. I lift my
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“The Lottery”: A Discovery Via the Tools of Irony and Symbolism Within the Framework of Formalism The approach to literary criticism known as Formalism focuses on the literary text itself as the source for meaning‚ and deems the text as the only context a critic should turn to for research. It is a style of criticism that places emphasis on the literary tools and techniques in a text‚ apart from a text’s or authors historical context. The key to Formalism is structural and textual analysis. With
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Philosophers Assignment Immanuel Kant: The German Philosopher Immanuel Kant (1724-1804) is one of the central figures in Modern Philosophy. In the The Methaphysik der Sitten (1797) (Methaphysics of Ethics) Kant described his ethical system. In short‚ the three fundamental elements in Kant’s System are: 1. Individuals are rational beings; They have a conception of laws or principles‚ the ability to make choices on the basis of reason and act on those choices. It is rationality that distinct
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CAMBRIDGE CELTA COURSE 24 June – 19 July 2013 Dear Trainee‚ Welcome to British Side and the course! You are now trainees on the Cambridge CELTA Course and students at British Side. The former means that you are following a training course designed by the University of Cambridge ESOL. The syllabus and assessment criteria are laid down by this organisation‚ and the course will be inspected and moderated by an externally appointed assessor. You will not be assessed by this person (s/he will inspect
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without rules in his novel‚ Lord of the Flies. By using word choice‚ action and even symbolism‚ Golding is able to present the common topics that surround a society without rules‚ such as the struggle for power and the need to feel safe within a community. By using these techniques‚ he is also able to present his opinion that a society without rules will become savage and will not be able to survive. By using symbolism‚ Golding is presented with the opportunity to explain the fear of being alone and
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As I enter Chamberlin Pines Swim and Tennis Club‚ I already feel sweat forming on my head. Mrs. Emerson‚ my boss‚ exclaims‚ “It is extremely busy today! How has your day been?” “My day has been boring because it has been too hot to do anything.” As I put on my lifeguard pack and my whistle‚ I greet my fellow lifeguards Eve and Molly and ask‚ “How is it down at the pool?” “The kids are getting pretty crazy.” As I walk down to the pool through the clubhouse‚ I think‚ “I expect that these kids are
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