final Flashcards

1
Q

arithmetic sequence

A

a sequence in which the difference if consecutive terms is constant

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2
Q

asymptote

A

a line that continually approaches a given curve but does not meet it at any finite distance.

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3
Q

change of base formula

A

A formula that allows you to rewrite a logarithm in terms of logs written with another base. This is especially helpful when using a calculator to evaluate a log to any base other than 10 or e.

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4
Q

circle

A

Circle helps businesses and developers harness the power of digital dollar stablecoins for payments and internet commerce worldwide.

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5
Q

combined variation

A

describes a situation where a variable depends on two (or more) other variables, and varies directly with some of them and varies inversely with others (when the rest of the variables are held constant).

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6
Q

common difference

A

The constant difference between consecutive terms of an arithmetic sequence is called the common difference

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7
Q

common logarithm

A

Log[10, x] and Log10[x].

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8
Q

common ratio

A

The constant factor between consecutive terms of a geometric sequence

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9
Q

completing the square

A

a method used to solve a quadratic equation by changing the form of the equation so that the left side is a perfect square trinomial

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10
Q

complex conjugates

A

Each of two complex numbers having their real parts identical and their imaginary parts of equal magnitude but opposite sign

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11
Q

complex fraction

A

be defined as a fraction in which the denominator and numerator or both contain fractions

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12
Q

complex number

A

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a symbol called the imaginary unit, and satisfying the equation i2 = −1.

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13
Q

composition of function

A

applying one function to the results of another. (g º f)(x) = g(f(x)), first apply f(), then apply g() We must also respect the domain of the first

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14
Q

compound inequality

A

a sentence with two inequality statements joined either by the word “or” or by the word “and.” “And” indicates that both statements of the compound sentence are true at the same time.

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15
Q

conic section

A

a curve obtained as the intersection of the surface of a cone with a plane. The three types of conic section are the hyperbola, the parabola, and the ellipse

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16
Q

consistent

A

inear or nonlinear system of equations

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17
Q

constant of variation

A

a direct variation is the constant (unchanged) ratio of two variable quantities.

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18
Q

continuous relation

A

A partial function that is continuous on its domain is continuous as a relation iff its domain is closed.

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19
Q

correlation coeifficent

A

are used to measure how strong a relationship is between two variables

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20
Q

dependent

A

variable is the one that depends on the value of some other number. If, say, y = x+3, then the value y can have depends on what the value of x is.

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21
Q

dimensions of a matrix

A

are the number of rows by the number of columns

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22
Q

direct variation

A

describes a simple relationship between two variables .

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23
Q

discriminant

A

the part of the quadratic formula underneath the square root symbol: b²-4ac.

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24
Q

ellipse

A

is the set of points in a plane such that the sum of the distances from two fixed points in that plane stays constant

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25
end behavior
a function f describes the behavior of the graph of the function at the "ends" of the x-axis.
26
exponential equation
are in the form ax=by
27
extraneous solution
extraneous solution
28
extrema
ny point at which the value of a function is largest (a maximum) or smallest (a minimum
29
factor theorem
used when factoring polynomials "completely
30
finite sequence
a list of terms in a specific order.
31
function
a process or a relation that associates each element x of a set X, the domain of the function
32
geometric sequence
a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.
33
greatest integer function
a constant value for each specific interval.
34
growth factor
Growth rate is the addend by which a quantity increases (or decreases) over time.
35
hyperbola
two curves that are like infinite bows
36
identity function
the equality f(x) = x holds for all x.
37
imaginary unit
(i)
38
inconsistent
two or more equations that are impossible to solve based on using one set of values for the variables, x+2=4 and x+2=6.
39
independent
a quantity that is being manipulated in an experiment. x is often the variable used to represent the independent variable in an equation.
40
infinite sequence
paired off one-to-one with the set of positive integer s {1, 2, 3, ...}.
41
interval notation
s a way to describe continuous sets of real numbers by the numbers that bound them
42
inverse function
The inverse is usually shown by putting a little "-1" after the function name, like this: f-1(y)
43
inverse relation
the inverse relation of a binary relation is the relation that occurs when the order of the elements is switched in the relation.
44
inverse variation
can be represented by the equation xy=k or y=kx
45
joint variation
as x and y if. z=kxy. for some constant k.
46
latus rectum
of a conic section is the chord through a focus parallel to the conic section directrix (Coxeter 1969).
47
linear programming
is a method to achieve the best outcome (such as maximum profit or lowest cost
48
logarithms
a quantity representing the power to which a fixed number (the base) must be raised to produce a given number.
49
logistic growth model
is approximately exponential at first, but it has a reduced rate of growth as the output approaches the model's upper bound, called the carrying capacity
50
matrix
a rectangular array of numbers
51
nth root
a number x is a number r which, when raised to the power n, yields x: where n is a positive integer, sometimes called the degree of the root
52
natural logarithm
ln x, loge x, or sometimes, if the base e is implicit, simply log x.
53
negative exponent
just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side.
54
parabola
A parabola is a curve where any point is at an equal distance from:
55
parent function
A parent function is the simplest function of a family of functions.
56
piece-wise defined function
A piecewise-defined function is one which is defined not by a single equation, but by two or more.
57
point-slope form
Point-slope is the general form y-y₁=m(x-x₁) for linear equations. It emphasizes the slope of the line and a point on the line (that is not the y-intercept).
58
quadratic function
The general form of a quadratic function is f(x)=ax2+bx+c where a, b, and c are real numbers and a≠0.
59
radicand
The value inside the radical symbol. The value you want to take the root of.
60
rate of change
The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.
61
rational exponent
exponent that is a fraction
62
rational function
is any function which can be written as the ratio of two polynomial functions, where the polynomial in the denominator is not equal to zero.
63
rationalizing the denominator
means to eliminate any radical expressions in the denominator such as square roots and cube roots
64
recursive formula
a formula that defines each term of a sequence using preceding term(s).
65
regression line
is represented by an equation
66
relative maximum
point is a point where the function changes direction from increasing to decreasing
67
relative minimum
the very bottom of the line before it starts to go up again
68
root
Where a function equals zero
69
scatter plot
is a two-dimensional graphical representation of a set of data.
70
sequence
A list of numbers or objects in a special order. Example: 3, 5, 7, 9, ... is a sequence starting at 3 and increasing...
71
set-builder notation
How to describe a set by saying what properties its members have. ... A Set is a collection of things (usually numbers).
72
step function
have lines with an open circle on one end and a closed circle on the other to indicate inclusion, like number line inequality graphs.
73
synthetic division
a shorthand, or shortcut, method of polynomial division in the special case of dividing by a linear factor
74
vertex form
of a quadratic is given by y = a(x – h)2 + k, where (h, k) is the vertex
75
vertical line test
a thing to make sure the graph is linear
76
zeros
Where a function equals the value zero (0).