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# Chapter 6 Vocabulary

### Math vocabulary

TermDefinition
Square Root If b2 = a then b is a square root of a.The radical sign,represents a nonegative square root.
Radical sign The symbol which is used to represent a square root.
Radicand The number or expression under a radical sign.
Square Root Equation An equation that contains a square root with a variable in the radicand.
Closed A set of numbers is closed under an operation when the operation performed on any two numbers in the results in a number that is also in the set.
n th Root When bn=a for an integer n greater than 1,b is an nth root of a.
Exponiental function A function of the form y=abx,where a =/0,b=/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)1,where a>0 and r>0.
Compound Interest
Exponential Decay when a quantity decreases by the same factor over equal intervals of time.
Geometric Sequence
Common ratio
Recursive Rule
Created by: Douglas Adams