Alphabetical Lesson List: (30) lessons starting with the letter E

[+]   Earnings Before Interest and Taxes (EBIT) and Net Income
Free Earnings Before Interest and Taxes (EBIT) and Net Income Calculator - Given inputs of sales, fixed costs, variable costs, depreciation, and taxes, this will determine EBIT and Net Income and Profit Margin

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Economics Summary
Free Economics Summary Calculator - This is a summary of notes, tips, and tricks for Economics

Features:  Calculator

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[+]   Effective Annual Yield Rate
Free Effective Annual Yield Rate Calculator - Figures out the effective annual yield rate of interest entered by compounding daily, weekly, semi-monthly, monthly, quarterly, semi-annually, and continuously.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (3):
4.56% daily
5.67 percent quarterly
2.45 pct compounded monthly

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[+]   Elapsed Time
Free Elapsed Time Calculator - This determines the elapsed time between two clock readings.

Features:  Calculator | Practice Problem Generator

Examples (2):
Difference between 11:15 a.m. and 6:00 p.m.
12:30 p.m. and 2:00 p.m.

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[+]   Ellipses
Free Ellipses Calculator - Given an ellipse equation, this calculates the x and y intercept, the foci points, and the length of the major and minor axes as well as the eccentricity.

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (1):
9x^2+4y^2=36

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[+]   Encryption
Free Encryption Calculator - Encrypts various strings using methods such as:
md2
md4
md5
sha1
sha256
sha384
sha512
ripemd128
ripemd160
ripemd256
ripemd320
whirlpool
tiger128,3
tiger160,3
tiger192,3
tiger128,4
tiger160,4
tiger192,4
snefru
gost
adler32
crc32
crc32b
haval128,3
haval160,3
haval192,3
haval224,3
haval256,3
haval128,4
haval160,4
haval192,4
haval224,4
haval256,4
haval128,5
haval160,5
haval192,5
haval224,5
haval256,5


Features:  Calculator

Examples (3):
encrypt(math)
sha1(math)
md5(biz)

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[+]   Equation and Inequalities
Free Equation and Inequalities Calculator - Solves an equation or inequality with 1 unknown variable and no exponents as well as certain absolute value equations and inequalities such as |x|=c and |ax| = c where a and c are constants. Solves square root, cube root, and other root equations in the form ax^2=c, ax^2 + b = c. Also solves radical equations in the form asqrt(bx) = c. Also solves open sentences and it will solve one step problems and two step equations. 2 step equations and one step equations and multi step equations

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (14):
2x=6
9w - 12<=20
-y + 2 + 10y - 9 -6 >= -3 + 4y + 40 - 8y
2x - 9(x - 4) = 10
|x|=-2
|-4y|=-8
x^2=25
2y^2=50
2y^2-3=53
2sqrt(4x)=20
|2x+4|=30
|x/2|<10
|2x+6|-7=40
(4x+10)^2=400

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[+]   Equation of a Plane
Free Equation of a Plane Calculator - Given three 3-dimensional points, this calculates the equation of a plane that contains those points.

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (1):
(2,4,6)(1,3,5)(9,8,4)

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[+]   Equation of Exchange
Free Equation of Exchange Calculator - Solves for any of the 4 variables in the Equation of Exchange: money, velocity, price, quantity

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (2):
M=20,V=10,Q=30
V=50,P=70,Q=80

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[+]   Equilateral Triangle
[+]   Equivalent Annual Cost (EAC)
Free Equivalent Annual Cost (EAC) Calculator - Given 2 Items/machines with an Investment Cost, expected lifetime, and maintenance cost, this will calculate the EAC for each Item/machine as well as draw a conclusion on which project to invest in.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Equivalent Fractions
Free Equivalent Fractions Calculator - Given a fraction, this will determine equivalent fractions

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (120):
Equivalent Fraction 1/2
Equivalent Fraction 1/3
Equivalent Fraction 1/4
Equivalent Fraction 1/5
Equivalent Fraction 1/6
Equivalent Fraction 1/7
Equivalent Fraction 1/8
Equivalent Fraction 1/9
Equivalent Fraction 1/10
Equivalent Fraction 1/11
Equivalent Fraction 1/12
Equivalent Fraction 1/13
Equivalent Fraction 1/14
Equivalent Fraction 1/15
Equivalent Fraction 1/16
Equivalent Fraction 2/3
Equivalent Fraction 2/4
Equivalent Fraction 2/5
Equivalent Fraction 2/6
Equivalent Fraction 2/7
Equivalent Fraction 2/8
Equivalent Fraction 2/9
Equivalent Fraction 2/10
Equivalent Fraction 2/11
Equivalent Fraction 2/12
Equivalent Fraction 2/13
Equivalent Fraction 2/14
Equivalent Fraction 2/15
Equivalent Fraction 2/16
Equivalent Fraction 3/4
Equivalent Fraction 3/5
Equivalent Fraction 3/6
Equivalent Fraction 3/7
Equivalent Fraction 3/8
Equivalent Fraction 3/9
Equivalent Fraction 3/10
Equivalent Fraction 3/11
Equivalent Fraction 3/12
Equivalent Fraction 3/13
Equivalent Fraction 3/14
Equivalent Fraction 3/15
Equivalent Fraction 3/16
Equivalent Fraction 4/5
Equivalent Fraction 4/6
Equivalent Fraction 4/7
Equivalent Fraction 4/8
Equivalent Fraction 4/9
Equivalent Fraction 4/10
Equivalent Fraction 4/11
Equivalent Fraction 4/12
Equivalent Fraction 4/13
Equivalent Fraction 4/14
Equivalent Fraction 4/15
Equivalent Fraction 4/16
Equivalent Fraction 5/6
Equivalent Fraction 5/7
Equivalent Fraction 5/8
Equivalent Fraction 5/9
Equivalent Fraction 5/10
Equivalent Fraction 5/11
Equivalent Fraction 5/12
Equivalent Fraction 5/13
Equivalent Fraction 5/14
Equivalent Fraction 5/15
Equivalent Fraction 5/16
Equivalent Fraction 6/7
Equivalent Fraction 6/8
Equivalent Fraction 6/9
Equivalent Fraction 6/10
Equivalent Fraction 6/11
Equivalent Fraction 6/12
Equivalent Fraction 6/13
Equivalent Fraction 6/14
Equivalent Fraction 6/15
Equivalent Fraction 6/16
Equivalent Fraction 7/8
Equivalent Fraction 7/9
Equivalent Fraction 7/10
Equivalent Fraction 7/11
Equivalent Fraction 7/12
Equivalent Fraction 7/13
Equivalent Fraction 7/14
Equivalent Fraction 7/15
Equivalent Fraction 7/16
Equivalent Fraction 8/9
Equivalent Fraction 8/10
Equivalent Fraction 8/11
Equivalent Fraction 8/12
Equivalent Fraction 8/13
Equivalent Fraction 8/14
Equivalent Fraction 8/15
Equivalent Fraction 8/16
Equivalent Fraction 9/10
Equivalent Fraction 9/11
Equivalent Fraction 9/12
Equivalent Fraction 9/13
Equivalent Fraction 9/14
Equivalent Fraction 9/15
Equivalent Fraction 9/16
Equivalent Fraction 10/11
Equivalent Fraction 10/12
Equivalent Fraction 10/13
Equivalent Fraction 10/14
Equivalent Fraction 10/15
Equivalent Fraction 10/16
Equivalent Fraction 11/12
Equivalent Fraction 11/13
Equivalent Fraction 11/14
Equivalent Fraction 11/15
Equivalent Fraction 11/16
Equivalent Fraction 12/13
Equivalent Fraction 12/14
Equivalent Fraction 12/15
Equivalent Fraction 12/16
Equivalent Fraction 13/14
Equivalent Fraction 13/15
Equivalent Fraction 13/16
Equivalent Fraction 14/15
Equivalent Fraction 14/16
Equivalent Fraction 15/16

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[+]   Estimate Decimals
Free Estimate Decimals Calculator - This calculator estimates a decimal.

Features:  Calculator | Practice Problem Generator

Examples (1):
estimate 3.31

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[+]   Estimate Fraction
Free Estimate Fraction Calculator - Estimates a fraction using a benchmark fractions of 1/2.

Features:  Calculator | Quiz Generator | Practice Problem Generator

Examples (1):
estimate 41/9

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[+]   Estimate Square Roots
Free Estimate Square Roots Calculator - Estimates the square root of a number

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (2):
estimate sqrt(124)
estimate Square root of 136

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[+]   Estimate Sums
Free Estimate Sums Calculator - Estimates the sum of 2 numbers.

Features:  Calculator | Practice Problem Generator

Examples (1):
145 + 23

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[+]   Estimating Reasonableness of Products
Free Estimating Reasonableness of Products Calculator - Given a product of 2 numbers and an estimated product, this will check to see if it is reasonable

Features:  Calculator | Practice Problem Generator

Examples (1):
an order of 28 packages of paper at $3.50 eack cost a toatle of $98. reasonable or not reasonable?

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[+]   Euclidean Geometry
Free Euclidean Geometry Calculator - Shows you the area, arc length, polar equation of the horizontal cardioid, and the polar equation of the vertical cardioid

Features:  Calculator | Quiz Generator | Practice Problem Generator

Examples (0):

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[+]   Euclids Algorithm and Euclids Extended Algorithm
Free Euclids Algorithm and Euclids Extended Algorithm Calculator - Given 2 numbers a and b, this calculates the following
1) The Greatest Common Divisor (GCD) using Euclids Algorithm
2) x and y in Bézouts Identity ax + by = d using Euclids Extended Algorithm Extended Euclidean Algorithm

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (2):
Euclids Algo for 5 and 90
Euclids Extended Algorithm for 15 and 65

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[+]   Eulers Formula for Planar Geometry
Free Eulers Formula for Planar Geometry Calculator - This calculator solves for any one of the 3 following items using Eulers Formula for planar geometry:
* Vertices (v)
* Faces (f)
* Edges (e)


Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (3):
5 vertices and 4 faces
6 faces,12 edges
e=20,v=12

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[+]   Eulers Totient (φ)
[+]   Even Numbers
Free Even Numbers Calculator - Shows a set amount of even numbers and cumulative sum

Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (1):
250 even numbers

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[+]   Event Likelihood
Free Event Likelihood Calculator - Given a probability, this determines how likely that event is

Features:  Calculator

Examples (0):

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[+]   Expand Master and Build Polynomial Equations
Free Expand Master and Build Polynomial Equations Calculator - This calculator is the ultimate expansion tool to multiply polynomials. It expands algebraic expressions listed below using all 26 variables (a-z) as well as negative powers to handle polynomial multiplication. Includes multiple variable expressions as well as outside multipliers.
Also produces a polynomial equation from a given set of roots (polynomial zeros). * Binomial Expansions c(a + b)x
* Polynomial Expansions c(d + e + f)x
* FOIL Expansions (a + b)(c + d)
* Multiple Parentheses Multiplications c(a + b)(d + e)(f + g)(h + i)


Features:  Calculator | Practice Problem Generator | Watch the Video

Examples (5):
(2a^2b^3c^4 - 6x^3y^4z^5)^5
(2a^2b^3c^4 - 6x^3y^4z^5 + 7l^7m^8n^9)^5
(2x + 3y)(5a + 6b)
6a(3a^2b^2 - 7x^4y^5)
polynomial zeros of 1,3,5

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[+]   Expanded Notation
Free Expanded Notation Calculator - Writes the expanded notation for a number.

Features:  Calculator | Practice Problem Generator

Examples (1):
expanded notation of 5432

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[+]   Expected Frequency
Free Expected Frequency Calculator - Given a contingency table (two-way table), this will calculate expected frequencies and then determine a conclusion based on a Χ2 test with critical value test and conclusion.

Features:  Calculator | Watch the Video

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[+]   Expected Value
Free Expected Value Calculator - This lesson walks you through what expected value is, expected value notation, the expected value of a discrete random variable, the expected value of a continuous random variable, and expected value properties.

Features:  Calculator | Practice Problem Generator | Watch the Video

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[+]   Exponential Distribution
Free Exponential Distribution Calculator - Calculates the Probability Density Function (PDF) and Cumulative Density Function (CDF) of the exponential distribution as well as the mean, variance, standard deviation, and entropy.

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

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[+]   Exponential Growth
Free Exponential Growth Calculator - This solves for any 1 of the 4 items in the exponential growth equation or exponential decay equation, Initial Value (P), Ending Value (A), Rate (r), and Time (t).

Features:  Calculator | Quiz Generator | Practice Problem Generator | Watch the Video

Examples (1):
400*e^(0.05)(6)

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[+]   Exponential Smoothing
Free Exponential Smoothing Calculator - Performs exponential smoothing on a set of data.

Features:  Calculator | Practice Problem Generator | Watch the Video

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