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mth 121 exam 1 review - MTH121Exam 1 Review Reviews are...

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MTH121—Exam 1 Review Reviews are not comprehensive. Homework and worksheets should also be reviewed. 1. Know Polya’s four steps for problem solving. 2. Define a problem. Define an exercise. How are they different? 3. List and explain when to use the six problem solving strategies from Chapter 1. 4. Fill in the next row: 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 5. The first four triangular numbers are shown: 1 2 3 4 a. Make a sketch to represent the six triangular number. b. How many dots will be in the 10 th triangular number? c. Write a formula for the number of dots in the n th triangular number. 6. Write the number 1013 in expanded form in base 10 and in base 5. 7. Know the definition of a function and a relation.
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8. Identify the domain set and the range set for 2,4 , 1,1 , 1,1 , 2,4 f . 9. Let A={0,1,2,3} and B={1,2,4,8}. Put in a correct symbol between the quantities. (There may be more than one correct choice.) a. 3_____B b. A_____B c. {3}_____B d. A_____B e. A_____B= {0,1,2,3,4,8} f. Find A-B=______ g. nA _______ h.
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