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anonymous

  • one year ago

Find the first six terms of the sequence. a1 = -3, an = 2 ● an-1

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  1. anonymous
    • one year ago
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    if I help will you give me a medal

  2. anonymous
    • one year ago
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    alright

  3. anonymous
    • one year ago
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    ok so I will work this out with you is that ok or do u want a direct aswer

  4. anonymous
    • one year ago
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    work it out

  5. Nnesha
    • one year ago
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    doesn't matter if they want or nah :-)

  6. anonymous
    • one year ago
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    ok :) so we start with -3 first and whats next to it an = -2 correct so if a1 = -3 and an = -2 then we know we have different orders of operations to work with. and fianally at the end we have an = -1 and again we find out we have a third different order of operation. so the next three will be between 1-3 so positive 3 positive 2 and positive 1 :)

  7. anonymous
    • one year ago
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    These are my answer choices. a. -6, -12, -24, -48, -96, -192 b. -3, -6, -12, -24, -48, -96 c. 0, 2, -6, -4, -2, 0 d. -3, -6, -4, -2, 0, 2

  8. Nnesha
    • one year ago
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    a_n is not just 2 it's \[\huge\rm a_n = 2 \times a_{n-1}\]

  9. anonymous
    • one year ago
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    can you choose multiple of them

  10. Nnesha
    • one year ago
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    n = next term so to find 2nd term replace n by 2

  11. anonymous
    • one year ago
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    so what is a

  12. anonymous
    • one year ago
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    can you choose multiple answers

  13. anonymous
    • one year ago
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    no

  14. Nnesha
    • one year ago
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    \[\huge\rm a_n = 2 \times a_{\color{Red}{n}-1}\] a_1 is first term

  15. Nnesha
    • one year ago
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    given is first term which is -3 so to find 2nd term replace n by 2 \[\huge\rm a_2 = 2 \times a_{\color{Red}{2}-1}\] 2-1 = 1 now its become a_1 so replace a_1 by -3

  16. anonymous
    • one year ago
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    okay? can you keep going?

  17. Nnesha
    • one year ago
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    \[\huge\rm a_2 = 2 \times a_{\color{Red}{2}-1}\] \[\large \rm a_2 = 2 \times a_{\color{Red}{_1}}\] a_1 is -3 so plug in \[\large\rm a_2 = 2 \times -3\] a_2 = - 2nd term is -6 now try other 3 terms

  18. Nnesha
    • one year ago
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    try to find*

  19. Nnesha
    • one year ago
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    replace n by 3 for 3rd term replace n by 4 for 4th term and replace n by 5 for 5th term

  20. anonymous
    • one year ago
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    so then you do a_3=2*-6 and get -12

  21. anonymous
    • one year ago
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    right?

  22. Nnesha
    • one year ago
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    yep right

  23. anonymous
    • one year ago
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    yay thank you sooo much!!!!

  24. Nnesha
    • one year ago
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    np :-)

  25. anonymous
    • one year ago
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    how are you with summation notation?

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