Math Glossary letter E

Math Glossary Letter E
earnings before interest and taxes
noun
Earnings Before Interest and Taxes

Revenue - Operating Expenses

EBIT
noun
Earnings Before Interest and Taxes

Revenue - Operating Expenses

eccentricity
noun
Deviation of a conic from a circular shapeeconomics
noun
study of production, distribution, and consumption of goods and servicesedges
noun
line segment joining two verticeseffective annual yield rate
noun
Yield rate taking compounding periods into effecteffective interest rate
noun
the return on an investment or the rate owed in interest on a loan when compounding is taken into account.eigenvalue
noun
set of scalars associated with a linear system of equationselapsed time
noun
Amount of time between two dateselasticity
noun
the change in the behavior of buyers and sellers in response to a price change for a good or serviceelectric
noun
the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge.element
noun
an element (or member) of a set is any one of the distinct objects that belong to that set. In chemistry, any substance that cannot be decomposed into simpler substances by ordinary chemical processes.elevation
noun
height above a given level, especially sea leveleliminate
noun
to remove, to get rid of or put an end toelimination
noun
Eliminating a variable in a system of equations to solve for another variable or variableselimination method
noun
Eliminating a variable in a system of equations to solve for another variable or variablesellipse
noun
a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constantempirical rule
noun
Provides estimate for the spread of data in a normal distribution. 68% of the data will fall within one standard deviation of the mean. 95% of the data will fall within two standard deviations of the mean. 99.7% of the data will fall within three standard deviations of the meanempty set
noun
The set with no elements

encryption
noun
encoding a message such that anybody outside authorized parties cannot read itendpoint
noun
end of a ray, line segment, or intervalenergy
noun
property that must be transferred to an object in order to perform work onengineering
verb
the application of science and mathematics by which the properties of matter and the sources of energy in nature are made useful to peopleentropy
noun
refers to disorder or uncertaintyepsilon
noun
A letter of the greek alphabet used for math notation.

Ε  ε

equal
noun
being the same in quantity, size, degree, or value

=

equality
noun
The state of being equal. A relationship between two quantities or two mathematical expressions, asserting that the quantities have the same value, or that the expressions represent the same mathematical objectequated time
noun
determine time from cash flow streamsequation
noun
a statement declaring two mathematical expressions are equalequation of a circle
noun
formula to graph a circle and the points on the circle

(x - h)2 + (y - k)2 = r2

equation of a line
noun
formula to graph the points on a line

y = mx + b

equation of a plane
noun
formula to graph the points in a plane

Ax + By + Cz + D = 0

equation of exchange
noun
equation relating money, price, velocity, and quantity

MV = PQ

equilateral triangle
noun
A triangle with 3 equal sidesequivalence
noun
the state or property of being equivalent.equivalent
noun
equal in value, amount, function, meaningequivalent annual cost
noun
formula comparing two different projects to see which one is more valuableequivalent coordinates
noun
Relating cartesian and polar coordinatesequivalent expressions
noun
see equationsequivalent fractions
noun
Two fractions with equal values, using a common factor to scale the numerator and denominatorerror
noun
difference between an observed value and the true value of a measurement.estimate
noun
an approximate calculation or judgment of the value, number, quantityestimate sum
noun
Using rounding to estimate the total of numbers using their rounded figuresestimation
noun
rough calculation of a number or quantityeta
noun
A letter of the greek alphabet used for math notation.

Η  η

euclidean norm
noun
magnitude or length of a vectoreuclids algorithm
noun
method for computing the greatest common divisor (GCD) of two numberseuclids extended algorithm
noun
division algorithm for integerseuler
noun
Famous mathematician who developed Euler's constantEulers Constant
noun
limiting difference between a harmonic series and natural logarithm

0.5772156649

Eulers Formula
noun
Equation relating 5 mathematical constants

eiπ + 1 = 0

eulers totient
noun
the number of positive integers that are relatively prime toevaluate
noun
To calculate the value ofeven number
noun
a whole number that is able to be divided by two into two equal whole numberseven numbers
noun
Numbers divisible by 2event
noun
a set of outcomes of an experiment to which a probability is assigned.evil numbers
noun
A number with an even number of 1s in the binary expansionexabyte
noun
multiple of the unit byte for digital informationexact time
noun
excel
noun
A spreadsheet softwareexchange matrix
noun
row-reversedr or column-reversed version of the identity matrixexchange rate
noun
The rate to convert one unit of currency to another unit of currencyexercise price
noun
the price at which an underlying security can be purchased or sold when trading a call or put optionexpand polynomials
noun
Write out the multiplication of polynomials term by termexpanded notation
noun
Writing out a number to show the sum of each digit multiplied by the place value

9256 = 9(1000) + 2(100) + 5(10) + 6(1)

expected
noun
results or observations that are predictedexpected frequency
noun
computed by multiplying the probability that an event occurs by the total number of possible times that the event could occur.

Expected Frequency = (Row Total * Column Total)/N

expected return
noun
amount of profit or loss an investor anticipates on an investmentexpected value
noun
predicted value of a variable or event

E(X) = ΣxI · P(x)

expense
noun
the cost required for something; the money spent on something. A financial burden or outlayexperiment
noun
In statistics, a controlled and repeatable processexperimental value
noun
the value that is measured during the experiment.exponent
noun
The power to raise a numberexponential
noun
of or relating to an exponentexponential distribution
noun
probability distribution that describes the time between events in a Poisson point processexponential fit
noun
Fit a curve to a set of data using an exponential functionexponential growth
noun
growth whose rate increase in proportion to the total numberexponential identity
noun
Identity using exponents for equivalent expressionsexponential smoothing
verb
Create smoothed data using exponential functions

αxt - 1 + (1 - α)st - 1

export
noun
movable goods produced within the boundaries of one country, which are traded with another countryexports
noun
goods and services produced in one country and purchased by citizens of another countryexpression
noun
finite combination of symbolsexterior angle
noun
the angle between a side of a rectilinear figure and an adjacent side extended outward.

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