Math

posted by Max

Write the first five terms of the sequence defined by the recursive formula a(n) = 2*(a(n - 1)) + 5 with a(1) = -3

-3, -10, -24, -43, -81
-3, -1, 3, 11, 27
-3, 2, 7, 12, 17
-3, 4, 18, 46, 102

I'm trying to do this the way I've always done them (and gotten them right in the past) but I keep getting it wrong:(

  1. Arora

    a(n) = 2*(a(n-1)) + 5
    a(1) = -3

    a(2) = 2*(a(2-1)) + 5
    = 2*(a(1)) + 5
    = 2*(-3) + 5
    = -1

    Basically, you take the previous value and plug it in the given formula to obtain the next value.

  2. Max

    haha I just figured it out too and now I feel stupid, but thank you!

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Advanced Functions

    I need help answering these questions 1. State the Common Ratio of the following Geometric sequence 3/4 , 3/10 , 3/25 , 6/125 2. In the Arithmetic Sequence below, X = ___ 100 , ___ , _X_ , 64 3. For the Geometric Sequence below, X …
  2. Math

    Question 1 Write the first four terms of the sequence whose general term is given. an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general …
  3. Math

    an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, 2, 6 -1, 1, 3, 5 -2, -4, -6, -8 -2, 2, …
  4. math30

    Sequences 1)A sequence has a first term of 24 and every other term is one half of the previous term. a)Write the first four terms of the sequence. b)Find a recursive formula that defines this sequence. c)Find an explicit formula that …
  5. Advanced algebra

    1.write the first four terms of the sequence that begins with 2000 and has the common ratio 1.05. 2.write the first four terms of the sequence that begins with 5000 and decays 15% with each term.what is the common ratio?
  6. algebra

    Could someone check my work; 1. Generate the first five terms in the sequence using the explicit formula. yn = –5n – 5 –30, –25, –20, –15, –10 30, 25, 20, 15, 10 –10, –15, –20, –25, –30(my answer) 10, 15, 20, …
  7. Algebra Recursive sequence help

    I need some help as I'm totally lost! I need to find the first five terms of each recursive sequence. The n-1 on the problem shows it below the a. 1. A1=3 An=2a n-1- 3 2. C1=64, C2=32 Cn= Cn-2 - Cn-1/2
  8. math

    Write the first 5 terms of the sequences defined by the recursive formula t1= 7, tn= 2tn-1 - 3n, n>1
  9. pre algebra

    Reiny can you please help with these 3 problem. 1. a1=-4;an-1-3 this is find the first five terms of the recursively defined sequence. Problem 2 and 3 is write the first terms of the explicitly defined sequence an=4n+2. problem 3 an=2(-3)n-1
  10. Math

    Write the first five terms of the sequence defined by the recursive formula a n = 5a n-1 -1, with a1=0

More Similar Questions