FUNCTIONS 11

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Write an equation for nth term in the sequence: -2, 5, -10, 17, -26

  • FUNCTIONS 11 -

    t(1)=-2
    t(2)=5
    t(3)=-10
    ...
    Hint:
    compare 2,5,10,17,26
    and 1,4,9,16,25....
    The sign can be achieved by multiply by the factor (-1)^n

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