Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Write an explicit formula that represents the sequence defined by the following recursive formula:

a_(1)=5" and "a_(n)=a_(n-1)+3
Answer: 
a_(n)=

Write an explicit formula that represents the sequence defined by the following recursive formula:\newlinea1=5 and an=an1+3 a_{1}=5 \text { and } a_{n}=a_{n-1}+3 \newlineAnswer: an= a_{n}=

Full solution

Q. Write an explicit formula that represents the sequence defined by the following recursive formula:\newlinea1=5 and an=an1+3 a_{1}=5 \text { and } a_{n}=a_{n-1}+3 \newlineAnswer: an= a_{n}=
  1. Identify First Term: Identify the first term of the sequence.\newlineThe first term is given as a1=5a_{1}=5.
  2. Determine Common Difference: Determine the common difference in the recursive formula.\newlineThe recursive formula an=an1+3a_{n}=a_{n-1}+3 suggests that each term is 33 more than the previous term. This indicates a common difference of 33.
  3. Write Explicit Formula: Write the explicit formula based on the first term and the common difference.\newlineThe explicit formula for an arithmetic sequence is given by an=a1+(n1)da_{n}=a_{1}+(n-1)d, where a1a_{1} is the first term and dd is the common difference.
  4. Substitute Known Values: Substitute the known values into the explicit formula.\newlineSubstituting a1=5a_{1}=5 and d=3d=3 into the formula, we get an=5+(n1)3a_{n}=5+(n-1)\cdot 3.
  5. Simplify Formula: Simplify the explicit formula.\newlineSimplifying the formula, we get an=5+3n3a_{n}=5+3n-3.\newlineCombining like terms, we get an=3n+2a_{n}=3n+2.

More problems from Identify a sequence as explicit or recursive