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aceace

  • 3 years ago

Sigma Notation Question!!!!

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  1. aceace
    • 3 years ago
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    Question 5b please!!

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  2. aceace
    • 3 years ago
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    What's the easy way of doing it?

  3. aceace
    • 3 years ago
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    I think the answer is three?

  4. Algebraic!
    • 3 years ago
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    yep

  5. aceace
    • 3 years ago
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    Yaay

  6. Algebraic!
    • 3 years ago
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    there's problem a general expression for the sum, don't know what exactly it is, but it's easy enough to see... \[(\sqrt[4]{1+1} -\sqrt[4]{1}) +(\sqrt[4]{1+2} -\sqrt[4]{2}) + (\sqrt[4]{1+3} -\sqrt[4]{3})...\] 1st and 4th terms cancel, 3rd and 6th terms cancel... etc. all terms cancel but the second and last

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