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math121A winter 2010 practice hw2

# math121A winter 2010 practice hw2 - (3 How might you...

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Math 121A, HW2 Reading Assignment: Read the article “The history of the concept of function and some educational implications” by Ponte and write a brief (one to two paragraph) summary. Problems: (1) Prove that { a n } n 1 is a linear (aka arithmetic) sequence if and only if its sequence of Frst di±erences is a constant (non-zero) sequence. (2) Prove that { a n } n 1 is an exponential (aka geometric) sequence if and only if the ratio of consecutive terms is a non-zero constant.
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Unformatted text preview: (3) How might you estimate a persons weight if all you know is their height? or example, given the following data for the average weight of a 20 year old female, how might you estimate the weight of a 20 year old female who is 5 7 tall? height weight 5 0 108 5 1 111 . 6 5 2 115 . 3 5 3 119 . 1 5 4 123 5 5 127 1...
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