 2012 Pearson Education, Inc. Slide 1-2-1 Chapter 1 The Art of Problem Solving.

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 2012 Pearson Education, Inc. Slide Chapter 1 The Art of Problem Solving

 2012 Pearson Education, Inc. Slide Chapter 1: The Art of Problem Solving 1.1 Solving Problems by Inductive Reasoning 1.2 An Application of Inductive Reasoning: Number Patterns 1.3 Strategies for Problem Solving 1.4 Calculating, Estimating, and Reading Graphs

 2012 Pearson Education, Inc. Slide Section 1-2 An Application of Inductive Reasoning: Number Patterns

 2012 Pearson Education, Inc. Slide An Application of Inductive Reasoning: Number Patterns Number Sequences Successive Differences Number Patterns and Sum Formulas Figurate Numbers

 2012 Pearson Education, Inc. Slide Number Sequences Number Sequence A list of numbers having a first number, a second number, and so on, called the terms of the sequence. Arithmetic Sequence A sequence that has a common difference between successive terms. Geometric Sequence A sequence that has a common ratio between successive terms.

 2012 Pearson Education, Inc. Slide Successive Differences Process to determine the next term of a sequence using subtraction to find a common difference.

 2012 Pearson Education, Inc. Slide , 22, 32, 44, Find differences 2 2 Find differences Example: Successive Differences Use the method of successive differences to find the next number in the sequence. Build up to next term:

 2012 Pearson Education, Inc. Slide Number Patterns and Sum Formulas Sum of the First n Odd Counting Numbers If n is any counting number, then Special Sum Formulas For any counting number n,

 2012 Pearson Education, Inc. Slide Example: Sum Formula Use a sum formula to find the sum Solution with n = 48: Use the formula

 2012 Pearson Education, Inc. Slide Figurate Numbers

 2012 Pearson Education, Inc. Slide Formulas for Triangular, Square, and Pentagonal Numbers For any natural number n,

 2012 Pearson Education, Inc. Slide Example: Figurate Numbers Use a formula to find the sixth pentagonal number Solution with n = 6: Use the formula