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Precalculus Terms

Word List with 43 words
*By Dictionary.com

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Words in This List

absolute value
noun
numerical value of a real number whether positive or negative
amplitude
noun
half the difference between the minimum and maximum values of range
argument
noun
angle corresponding to a point representing a given complex number in polar coordinates
augmented matrix
noun
matrix form of a linear system of equations obtained from the coefficient matrix
axis of symmetry
noun
imaginary line between two mirrored images in a geographical form
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coefficient matrix
noun
matrix formed by the coefficients in a linear system of equations
cofactor
noun
determinant obtained by deleting the row and column of a given element
complex numbers
noun
numbers that can be written as the sum or difference of a real and imaginary number
cramer's rule
noun
method for solving a linear system of equations using determinants
demoivre's theorem
noun
formula useful for finding powers and roots of complex numbers
determinant
noun
single number obtained from a matrix that reveals a variety of the matrix's properties
directrix of a parabola
noun
line perpendicular to the axis of symmetry used in the definition of a parabola
eccentricity
noun
number that indicates how attenuated a conic section is
even functions
noun
function with a graph that is symmetric with respect to the y axis
factorial
noun
product of a given integer and all smaller positive integers
foci of an ellipse
noun
two fixed points on the interior of an ellipse used in the formal definition of the curve
focus of a parabola
noun
fixed point on the interior of a parabola used in the formal definition of the curve
function operations
noun
definitions for combining functions by adding, subtracting, multiplying, dividing, composing them
gauss jordan elimination
noun
solving system of equations by transforming the augmented matrix into reduced row echelon form
gaussian elimination
noun
transforming the system's augmented matrix into row echelon form by means of row operations
heron's area formula
noun
formula for the area of a triangle used when the lengths of all three sides are known
identity matrix
noun
square matrix which has a 1 for each element on the main diagonal and 0 for all other elements
inverse function
noun
function obtained by switching the x and y variables in a function
magnitude
noun
amount of a quantity of this is never negative
matrix
noun
rectangular or square array of numbers
modulus
noun
distance between a complex number and the origin on the complex plane
natural logarithm
noun
logarithm to the base e, where e is an irrational constant
orthogonal
adjective
at a 90 degree angle
parametric equations
noun
system of equations with more than one dependent variable
partial sum
noun
sum of a finite number of terms of a series
periodic function
adjective
function having a graph that repeats itself identically over and over, left to right
polar axis
noun
positive x axis
polar coordinates
noun
way to describe the location of a point on a plane
recursive sequence
noun
formula requiring the computation of all previous terms to find the value
reduced row-echelon form
noun
matrix form used in solving linear systems of equations
scalar
adjective
any real number, or quantity that can be measured using a single real number
sequence
noun
set whose elements have an order similar to that of the positive integers
series
noun
sequence of terms combined by addition
square matrix
noun
matrix in which the number of rows is equal to the number of columns
unit vector
noun
vector having a length of one unit
vector
noun
quantity, drawn as an arrow, with both direction and magnitude
zero matrix
noun
matrix for which all elements are equal to zero
zero vector
noun
vector of which all the components are zero

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