Math Problem Statement

Find the first five terms of the sequence defined below, where n represents the position of a term in the sequence. Start with n = 1.

an = 2(4)n

Solution

The sequence is defined by the formula:

an=2(4)na_n = 2(4)^n

where nn represents the position of a term in the sequence.

Let's calculate the first five terms by substituting n=1,2,3,4,5n = 1, 2, 3, 4, 5 into the formula:

  1. For n=1n = 1: a1=2(4)1=2×4=8a_1 = 2(4)^1 = 2 \times 4 = 8

  2. For n=2n = 2: a2=2(4)2=2×16=32a_2 = 2(4)^2 = 2 \times 16 = 32

  3. For n=3n = 3: a3=2(4)3=2×64=128a_3 = 2(4)^3 = 2 \times 64 = 128

  4. For n=4n = 4: a4=2(4)4=2×256=512a_4 = 2(4)^4 = 2 \times 256 = 512

  5. For n=5n = 5: a5=2(4)5=2×1024=2048a_5 = 2(4)^5 = 2 \times 1024 = 2048

Thus, the first five terms of the sequence are:

8,32,128,512,20488, 32, 128, 512, 2048

Would you like more details or have any further questions on this?

Here are 5 related questions to explore:

  1. How does the growth of this sequence compare to other types (e.g., linear or quadratic)?
  2. What happens to the terms of the sequence as nn increases beyond 5?
  3. Can you find the 10th term of this sequence?
  4. How would the sequence change if the formula was an=3(4)na_n = 3(4)^n?
  5. How would the sequence change if the formula was an=2(3)na_n = 2(3)^n?

Tip: In exponential sequences, the base (in this case, 4) dictates how quickly the values grow as nn increases.

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Math Problem Analysis

Mathematical Concepts

Exponential Sequences
Sequences and Series
Algebra

Formulas

a_n = 2(4)^n

Theorems

Exponential Growth

Suitable Grade Level

Grades 7-9