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In a quadratic sequence.....Term 2 is 11,Term 4 is -7,term 7 is -64....determin the general term for the sequence

  • Maths -

    4a + 2b + c = 11
    16a + 4b + c = -7
    49a + 7b + c = -64

    (a,b,c) = (-2,3,13)

    So, Tn = -2n^2 + 3n + 13

  • Maths -

    How dd u fynd dem....lyk de steps

  • Maths -

    just solved the system of equations. I used wolframalpha.com, but you can use elimination, determinants, substitution, or whatever you like to use for solving systems of equations.

    Algebra I stuff. Dust off those skills.

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