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Math4Life

  • 3 years ago

Evaluate the infinte geometric series.

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  1. Math4Life
    • 3 years ago
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    \[\sum_{n=1}^{\infty} (-1/2 )^{n-2}\]

  2. Ket-kat
    • 3 years ago
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    Okay, this is an infinite solution since the top is your upper limit and the bottom is the lower limit

  3. Ket-kat
    • 3 years ago
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    so, -1/2^1-2 and so on - all the way to infinity - is going to be your answer

  4. Math4Life
    • 3 years ago
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    \[\sum_{n=1}^{\infty} 3(0.4)^{n-1}\]

  5. Math4Life
    • 3 years ago
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    that also and thanks keep explaining

  6. Math4Life
    • 3 years ago
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    1. -1/2^1-2 all the way to infinity (my answer for number 1?)

  7. Ket-kat
    • 3 years ago
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    Same thing for this equation. Replace the n with the lower limit (1) all the way to infinity. You don't have to show the work up to infinity, just lead up to it

  8. Math4Life
    • 3 years ago
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    @Ket-kat so what would that be for number 2?

  9. Ket-kat
    • 3 years ago
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    ?

  10. Math4Life
    • 3 years ago
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    @Ket-kat whats the answer for 1 and 2, i'm confused.

  11. 15Trev
    • 3 years ago
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    hate that stuff

  12. Math4Life
    • 3 years ago
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    @15Trev can you still help me though?

  13. Ket-kat
    • 3 years ago
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    Okay Like I said. In both equations on the left side of the stigma, replace the n with: 1,2,3,4,5,6,7,8,9,10.......... infinity And solve the equations :)

  14. 15Trev
    • 3 years ago
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    i think so

  15. Math4Life
    • 3 years ago
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    Thanks

  16. Ket-kat
    • 3 years ago
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    <3 No worries

  17. 15Trev
    • 3 years ago
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    we did this last chapter

  18. Ket-kat
    • 3 years ago
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    FLVS? I'm doing it now xD

  19. Math4Life
    • 3 years ago
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    Nice so its fresh for you

  20. 15Trev
    • 3 years ago
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    k

  21. 15Trev
    • 3 years ago
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    so first u have to know that whats in parenths is ur rate

  22. 15Trev
    • 3 years ago
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    multiply parenths by # next to them

  23. Math4Life
    • 3 years ago
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    1. \[\sum_{n=1}^{\infty} (-1/2)^{n-1}\] 2. \[\sum_{n=1}^{\infty} 3(0.4)^{n-1}\]

  24. 15Trev
    • 3 years ago
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    like 3x.4

  25. Math4Life
    • 3 years ago
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    =12

  26. 15Trev
    • 3 years ago
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    no

  27. 15Trev
    • 3 years ago
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    .4

  28. Math4Life
    • 3 years ago
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    3x.4= 1.2 my bad

  29. 15Trev
    • 3 years ago
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    ya

  30. 15Trev
    • 3 years ago
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    now take 1 and subtract by # in ( )

  31. 15Trev
    • 3 years ago
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    like 1-.4

  32. Math4Life
    • 3 years ago
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    .6

  33. 15Trev
    • 3 years ago
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    forget everythng i said

  34. Math4Life
    • 3 years ago
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    *easily erases everything you said from brain*

  35. Math4Life
    • 3 years ago
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    @15Trev soooooo...?

  36. 15Trev
    • 3 years ago
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    wait

  37. 15Trev
    • 3 years ago
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    k lets do #2

  38. Math4Life
    • 3 years ago
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    What about 1?

  39. 15Trev
    • 3 years ago
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    later

  40. Math4Life
    • 3 years ago
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    ok

  41. 15Trev
    • 3 years ago
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    remember everything i siad erlier actualy

  42. Math4Life
    • 3 years ago
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    WTF.. ok lol :)

  43. saifoo.khan
    • 3 years ago
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    wtf = wow, that's fantastic.

  44. Math4Life
    • 3 years ago
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    @saifoo.khan exactly

  45. saifoo.khan
    • 3 years ago
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    Totally.

  46. 15Trev
    • 3 years ago
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    u can leave now

  47. 15Trev
    • 3 years ago
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    wats 1-.4

  48. Math4Life
    • 3 years ago
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    .6

  49. Math4Life
    • 3 years ago
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    @15Trev its .6

  50. 15Trev
    • 3 years ago
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    just get someone else to do it

  51. 15Trev
    • 3 years ago
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    i forget

  52. Math4Life
    • 3 years ago
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    @15trev nobody else is helping

  53. 15Trev
    • 3 years ago
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    well if i brought home my book i would know

  54. 15Trev
    • 3 years ago
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    do u hav the formula

  55. Math4Life
    • 3 years ago
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    No :/

  56. Math4Life
    • 3 years ago
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    @15Trev i just turned it in without those answers :/

  57. 15Trev
    • 3 years ago
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    what do u mean

  58. 15Trev
    • 3 years ago
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    i goota take a poop brb

  59. Math4Life
    • 3 years ago
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    @15Trev nvm just ill send u a link to my new question

  60. 15Trev
    • 3 years ago
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    k

  61. Math4Life
    • 3 years ago
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    @15Trev can u oovoo?

  62. 15Trev
    • 3 years ago
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    not now

  63. Math4Life
    • 3 years ago
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    @15Trev why?

  64. 15Trev
    • 3 years ago
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    the person im babysitting is right here

  65. 15Trev
    • 3 years ago
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    post link to new q

  66. Math4Life
    • 3 years ago
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    @15Trev ur not babysitting ur bro? and im in the middle of posting it

  67. 15Trev
    • 3 years ago
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    no

  68. 15Trev
    • 3 years ago
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    nabor

  69. 15Trev
    • 3 years ago
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    she likes minecraft

  70. 15Trev
    • 3 years ago
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    lol

  71. Math4Life
    • 3 years ago
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    @15Trev lol to bad both servers we like r down

  72. 15Trev
    • 3 years ago
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    ya

  73. Math4Life
    • 3 years ago
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    @15Trev so when r u done babysittin?

  74. 15Trev
    • 3 years ago
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    730

  75. Math4Life
    • 3 years ago
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    @15Trev I gotta mow the lawn, so later we can oovoo

  76. 15Trev
    • 3 years ago
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    k just finished babysittin

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