Math Terms
Cards
Natural numbers
1,2,3,4...
Whole numbers
0,1,2,3...
(Natural numbers + 0)
Integers
Whole numbers and their opposites.
Complement of a Set
Denoted by "A" with a bar over the top, is the set of all elements that belong to the universe U but do not belong to A.
Universe
The "universal" set is the set of all elements under consideration in a given situation, usually denoted by the letter "U".
Intersection
Upside down "U", the set of all elements that belong to both sets A and B.
Composite Numbers
All non-prime numbers. i.e. whole numbers greater than 1 that have three or more factors.
Commutative Property
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Associative Property
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Distributive Property of Multiplication Over Addition and Subtraction
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Rational Numbers
Any number that can be written as the quotient of two integers, where the denominator is not 0.
Irrational Numbers
Numbers that can NOT be written as the quotient of two integers (as Rational numbers can). It's an infinite decimal number that does not repeat.
tangent
opposite/adjacent
sine
opposite/hypotenuse
cosine
adj/hypotenuse
Axis of Symmetry
-b/2a
Quadratic Formula
-b +or- the square root of b^2*4(a)(c) / 2a
Quadratic Formula
!http://facstaff.gpc.edu/~mkim/C1211&1212Lec/14_Quadratic_Formula.jpg!
Double Root
In a quadratic a equation where there is only one root, that root is called a "double root"
Roots
The x-coordinates of the points at which the graph of y=ax^2^ + bx + c intersects the x axis are the roots of the equation ax^2^+bx+c = 0.
Real Numbers
The set of natural numbers, whole numbers and integers.
i.e. R = {x|x corresponds to a point on the number line}
Also, the union of the sets of Rational and Irrational numbers.
Rational Expression
The quotient of two polynomials, where the denominator does not equal 0.
Rational Equation
An equation in which one or more terms is a rational expression. Note: one or more denominators must contain a variable.
