Math Problem Statement

Find the first five terms of the sequence defined by a_n = 2(2^n), starting with n = 1.

Solution

The sequence provided is defined as:

an=2(2n)a_n = 2(2^n)

We are tasked with finding the first five terms, starting with n=1n = 1.

Let's calculate the terms:

  1. For n=1n = 1: a1=2(21)=2×2=4a_1 = 2(2^1) = 2 \times 2 = 4

  2. For n=2n = 2: a2=2(22)=2×4=8a_2 = 2(2^2) = 2 \times 4 = 8

  3. For n=3n = 3: a3=2(23)=2×8=16a_3 = 2(2^3) = 2 \times 8 = 16

  4. For n=4n = 4: a4=2(24)=2×16=32a_4 = 2(2^4) = 2 \times 16 = 32

  5. For n=5n = 5: a5=2(25)=2×32=64a_5 = 2(2^5) = 2 \times 32 = 64

Thus, the first five terms of the sequence are:

4,8,16,32,644, 8, 16, 32, 64

Let me know if you'd like more details or have any questions!


Related questions:

  1. How would the sequence change if the base of the exponent were 3 instead of 2?
  2. What is the general formula for the sum of the first nn terms of this sequence?
  3. How does this sequence relate to geometric progressions?
  4. What happens if we change the multiplier from 2 to another constant?
  5. How do we derive the nn-th term for this type of exponential sequence?

Tip: In exponential sequences, each term grows rapidly due to the power function. Understanding how the exponent affects growth is key to analyzing such sequences.

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Math Problem Analysis

Mathematical Concepts

Algebra
Exponential Sequences

Formulas

a_n = 2(2^n)

Theorems

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Suitable Grade Level

Grades 7-9