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anonymous

  • one year ago

ill medal and fan .. What is the explicit formula for the following sequence: -4, -1, 2, 5...? A(n) = -4 + (n - 1)(2) A(n) = -4 + (n - 1)(3) A(n) = 3 + (n - 1)(-4) A(n) = 3(n - 1) + 5

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  1. trwatkins1
    • one year ago
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    wow this one is hard

  2. anonymous
    • one year ago
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    i know 😒

  3. trwatkins1
    • one year ago
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    sorry cant figure it out :(

  4. anonymous
    • one year ago
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    thank you for trying .

  5. anonymous
    • one year ago
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    @jim_thompson5910 @Nnesha @phi

  6. Nnesha
    • one year ago
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    looks like arithmetic general equation is \[\huge\rm a_n =a_1 +(n-1)d\] where a_1 = first term d=common difference n= term that we have to find to find common difference subtract any term from the previous one \[\large\rm \color{red}{d = a_2 - a_1 , a_4 -a_3 , a_3 - a_2}\]

  7. anonymous
    • one year ago
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    Thank youu !

  8. anonymous
    • one year ago
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    It is b right ?

  9. Nnesha
    • one year ago
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    idk you tell me is it b ;) why b ? \o^_^o/

  10. Nnesha
    • one year ago
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    why not A ?? ;)

  11. anonymous
    • one year ago
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    because the difference is positive 3 right

  12. Nnesha
    • one year ago
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    :=) gO_Od job! a_1 = first term which is -4 so yea

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