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# Chapter 6 Vocabulary

### Chapter 6 math vocab

TermDefinition
nth root when bn = a for an integer n greater than 1, b is the nth root of a
exponential function a function of the form y = ab x , where a doesn’t equal 0, b doesn’t equal 1, and b > 0.
exponential growth when a quantity increases by the same factor over equal intervals of time.
exponential growth function a function of the form y = a(1 + r)t , where a > 0 and r > 0.
exponential decay when a quantity decreases by the same factor over equal intervals of time.
exponential decay function a function of the form y = a(1 - r)t , where a > 0 and 0 < r < 1.
compound interest interest earned on the principal and on previously earned interest.
geometric sequence a sequence in which the ratio between consecutive terms is the same; this ratio is called the common ratio.
common ratio the ratio between consecutive terms of a geometric sequence.
recursive rule gives the beginning term(s) of a sequence and an equation that indicates how any term an in the sequence relates to the previous term.
Created by: s730358