Warm-up Quiz Tomorrow

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Presentation transcript:

Warm-up 2-19-13*Quiz Tomorrow* 1. Find 3f(x) + 2g(x) 2. Find g(x) – f(x) 3. Find g(-2)

Questions over HW?

Arithmetic Sequence A sequence of terms that have a common difference between them

Geometric Sequence A sequence of terms that have a common ratio between them

Explicit Formula Formula used to find the nth term of a sequence There are two types.

Explicit Formula for Arithmetic Sequence

Explicit Formula for Geometric Sequence

Arithmetic or Geometric? Example: -22, -15, -8, -1, … Arithmetic d = 7

Arithmetic or Geometric? Example: 7, 4, 1, -2, -5 Arithmetic d = -3

Arithmetic or Geometric? Example: 256, 64, 16, 4, … Geometric r = 1/4

Arithmetic or Geometric? Example: Geometric r = 2/3

Find the common difference, the explicit formula, and the tenth term. 3, 9, 15, 21, … d = 6 an = 6n – 3 a10 = 57

Find the common ratio, the explicit formula, and the seventh term. 3, 1.5, 0.75, 0.375, …

The fifth term is 1,792. The constant ratio is 4 The fifth term is 1,792. The constant ratio is 4. Write the explicit formula.

Classwork Sequence Practice WS

Arithmetic and Geometric Sequence Practice WS Homework Arithmetic and Geometric Sequence Practice WS