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Sequences and Series
  
 
Problems
Problem 1.1: Find an explicit formula for the following sequence: 1, 3, 5, 7, 9,.... [Solution]
Problem 1.2: Find three explicit formulas for the following sequence: -1, 1, -1, 1, -1, 1,… (Hint: Use trigonometric functions, too). [Solution]
Problem 1.3: What is the 11th term of the sequence an = 2n - 6? [Solution]
Problem 1.4: Calculate
(4i - 5)
. [Solution]
Problem 1.5: Calculate
5(k + 2)
. [Solution]
Problem 1.6: Let an = 4n2. What is the sum of the first five terms of a? [Solution]
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