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a sequence with a constant second difference between consecutive terms has a quadratic general term which can be written Tn = an2 + bn + c.
the matching of elements of one set onto elements of another set according to a given rule.
to write an expression as a product of its factors.
(Z) all the positive whole numbers along with their negative counterparts, and...
representation of a (practical) problem in mathematical language in order to solve the problem...
the horizontal axis in a Cartesian plane.