Pre-Calculus Calculators: (20) lessons

[+] Antilog
[+] Base Conversion Operations
This calculator allows you to add, subtract, multiply, and divide two numbers with different bases.

Features: Calculator | Practice Problem Generator | Watch the Video

Examples (8): 20 base 6 + 50 base 4, 30 base 4 * 20 base 2, 35 base 6 - 42 base 8, 22 base 6 / 44 base 3, 2_6+50_4, 30_4*20_2, 35_6 - 42_8, 22_6/44_3Tags: addition, base, division, multiplication, subtraction
[+] Circle Equation
This calculates the standard equation of a circle and general equation of a circle from the following given items:
* A center (h,k) and a radius r
* A diameter A(a1,a2) and B(b1,b2)
This also allows you to enter a standard or general form equation so that the center (h,k) and radius r can be determined.

Features: Calculator | Practice Problem Generator | Watch the Video

Examples (4): (1,1)(2,4), (1,4) and (5,6), (h,k) = (2,- 4) and r = 5, (x - 2)^2 + (y + 5)^2 = 81Tags: center, circle, diameter, equation, midpoint, radius
[+] Conjugates
Simplifies a fraction with conjugates in the denominator

Features: Calculator | Practice Problem Generator | Watch the Video

Examples (3): 3/2+sqrt(6), 5/(7-sqrt(3)), 5/sqrt(3)Tags: conjugate, simplify
[+] Demoivres Theorem
Using Demoivres Theorem, this calculator performs the following:
1) Evaluates (acis(θ))n
2) Converts a + bi into Polar form
3) Converts Polar form to Rectangular (Standard) Form

Features: Calculator

Examples (2): 2cis60^3, 4-7iTags: imaginary, polar
[+] Divisibility
Shows the divisibility of a number by seeing if it is divisible by (2,3,4,5,6,7,8,9,10,11)

Features: Calculator | Practice Problem Generator

Examples (1): Divisibility of 120
[+] Ellipses
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=36Tags: eccentricity, ellipse, focus
[+] Factorials
Calculates the following factorial items:
* A factorial of one number such as n!
* A factorial of a numerator divided by a factorial of a denominator such as n!m!/a!b!
* Double Factorials such as n!!
* Stirlings Approximation for n!

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

Examples (36): 1!, 1!!, 1 factorial, FACT(1), 2!, 2!!, 2 factorial, FACT(2), 3!, 3!!, 3 factorial, FACT(4), 1!, 4!!, 4 factorial, FACT(4), 5!, 5!!, 5 factorial, FACT(5), 6!, 6!!, 6 factorial, FACT(6), 7!, 7!!, 7 factorial, FACT(7), 8!, 8!!, 8 factorial, FACT(8), 9!, 9!!, 9 factorial, FACT(9)Tags: double factorial, factorial, stirling
[+] Function
Takes various functions (exponential, logarithmic, signum (sign), polynomial, linear with constant of proportionality, constant, absolute value), and classifies them, builds ordered pairs, and finds the y-intercept and x-intercept and domain and range if they exist.

Features: Calculator | Practice Problem Generator

Examples (2): y=5, f(x)=3^xTags: domain, function, ordered pair, range
[+] Function Test
Checks to see if a set of ordered pairs represents a function

Features: Calculator | Practice Problem Generator | Watch the Video

Examples (1): {(2,6),(-3,6),(4,9),(2,10)}Tags: domain, function, ordered pair, rang
[+] Hyperbola
Given a hyperbola equation, this calculates:
* Equation of the asymptotes
* Intercepts
* Foci (focus) points
* Eccentricity ε
* Latus Rectum
* semi-latus rectum

Features: Calculator | Practice Problem Generator | Watch the Video

Examples (2): x^2/81 - y^2/36 = 1, y^2/100 - x^2/49 = 1Tags: asymptote, foci, intercept
[+] Input Table
Given an input table with input and output values, this will determine the operator and rule used to populate the missing values.

Features: Calculator | Practice Problem Generator
[+] Irrational Numbers Between
This calculator determines all irrational numbers between two numbers

Features: Calculator | Practice Problem Generator

Examples (1): irrational numbers between 7 and 9Tags: irrational, natural, rational, whole
[+] Logarithms
Using the formula Log ab = e, this calculates the 3 pieces of a logarithm equation:
1) Base (b)
2) Exponent
3) Log Result
In addition, it converts
* Expand logarithmic expressions

Features: Calculator | Quiz Generator

Examples (8): log 1000, log(85), log of 200, logarithm of 500, 5^3=125, log4(8), log2(8x^4/5), log2(8x^4)Tags: base, exponent, logarithm
[+] Logarithms and Natural Logarithms and Eulers Constant (e)
This calculator does the following:
* Takes the Natural Log base e of a number x Ln(x) → logex
* Raises e to a power of y, ey
* Performs the change of base rule on logb(x)
* Solves equations in the form bcx = d where b, c, and d are constants and x is any variable a-z
* Solves equations in the form cedx=b where b, c, and d are constants, e is Eulers Constant = 2.71828182846, and x is any variable a-z
* Exponential form to logarithmic form for expressions such as 53 = 125 to logarithmic form
* Logarithmic form to exponential form for expressions such as Log5125 = 3


Features: Calculator | Quiz Generator | Practice Problem Generator

Examples (9): e^5, e^13.24, Ln 50, LN(80), natural log 45, 3^5x=27, 4e^6x=100, e^2q=48, Ln(4x) = 5Tags: euler, logarithm, natural log, power
[+] Parabolas
Determines the focus, directrix, and other related items for a parabola.

Features: Calculator | Quiz Generator | Watch the Video

Examples (3): y^2 = -12x, x^2 = 24y, (y - 2)^2 = 12(x - 5)Tags: directrix, focus, parabola
[+] Permutations and Combinations
Calculates the following:
Number of permutation(s) of n items arranged in r ways = nPr
Number of combination(s) of n items arranged in r unique ways = nCr including subsets of sets

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

Examples (9): 10 permutations of 6, 5 combinations of 3, 9 combination 4, 8 combination 2, 6 permutation 2, 10 permutations of 5, 6P3, 7c4, how many subsets of at least 3 elements can be formed from a set of 4 elementsTags: combination, factorial, permutation
[+] PI
This calculator performs operations with PI and gives you other options for π related calculations.

Features: Calculator | Practice Problem Generator

Examples (1): 16piTags: number, rational
[+] Polar Conics
Given eccentricity (e), directrix (d), and angle θ, this determines the vertical and horizontal directrix polar equations.

Features: Calculator | Practice Problem Generator
[+] Rational,Irrational,Natural,Integer Property
This calculator takes a number, decimal, or square root, and checks to see if it has any of the following properties:
* Integer Numbers
* Natural Numbers
* Rational Numbers
* Irrational Numbers

Features: Calculator | Practice Problem Generator

Examples (4): is 34 natural, is 85.6 rational, prove 99.7 is rational, is 45 an integerTags: irrational, natural, rational, whole