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bmelyk

  • 3 years ago

Write the following sums in summation notation.

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  1. bmelyk
    • 3 years ago
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    \[1+\frac{ 2 }{ 3 }+\frac{ 3 }{ 5 }+\frac{ 4 }{ 7 }+\frac{ 5 }{ 9 }+\frac{ 6 }{ 11 }+\frac{ 7 }{ 13 }\]

  2. bmelyk
    • 3 years ago
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    not sure how to start it.

  3. lemonbubblegum
    • 3 years ago
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    can anything be reduced???

  4. precal
    • 3 years ago
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    |dw:1359576924956:dw|

  5. precal
    • 3 years ago
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    |dw:1359577005004:dw|

  6. precal
    • 3 years ago
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    |dw:1359577014900:dw|

  7. precal
    • 3 years ago
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    |dw:1359577090843:dw|

  8. precal
    • 3 years ago
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    ok just a lot of guess and check but that one works

  9. bmelyk
    • 3 years ago
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    i know those formulas but, im not sure how im supposed to start it. like how do you know what n equals?

  10. bmelyk
    • 3 years ago
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    @precal

  11. precal
    • 3 years ago
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    you can use n or k

  12. precal
    • 3 years ago
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    I just notice that the numerators were 1,2,3,4,5,6,7

  13. precal
    • 3 years ago
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    so I knew I could use n or n+1

  14. precal
    • 3 years ago
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    the denominators were odd 1,3,5,7,9,11,13 in math we use 2n+1 for odd for evens we use 2n

  15. precal
    • 3 years ago
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    I had to guess whether to use n=0 or n=1 as my first numbers, so that is why you see me testing them|dw:1359577972172:dw|

  16. precal
    • 3 years ago
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    there really is no one way to do these, just a lot of guess and check

  17. bmelyk
    • 3 years ago
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    that's kinda confusing lol.

  18. precal
    • 3 years ago
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    I showed you my way of thinking, just follow my slides in order. Math is all about patterns

  19. bmelyk
    • 3 years ago
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    yes but i don't see how you are guessing it.

  20. bmelyk
    • 3 years ago
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    i really don't understand what you are doing,

  21. precal
    • 3 years ago
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    I wrote my process out, sorry perhaps someone else can explain it to you

  22. bmelyk
    • 3 years ago
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    i just don't see what you are doing is all.

  23. precal
    • 3 years ago
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    sorry, series and sequences get easier when you have done many it takes time and experience I just used guess and check

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