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Elimination Method, with Three Equations in Three Unknowns
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Factoring Trinomials
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Puzzle: Area of Smaller Square
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Conic Sections
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Determinant Method of Finding a Line Through Two Points
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Finding Coefficients
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Point And Triangle
Point And Triangle
Point And Triangle
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Conversion between Polar and Rectangular
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Fractal Sequence
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Sines and Cosines of Common Angles
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Summary of Identities
Solving Trig Equations
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Phase shift
cos and sin product identity
Broken Calculator Puzzle
sin (x/2) cos (x/2) = (1/2) sin x
Cos x + y = cos x cos y - sin x sin y
tan x+y = (tan x + tan y) / (1 - tan x tan y)
cos(2x) = (1-tan²(x))/(1+tan²(x))
Collapse Sin or Cos 3x, 4x, etc.Sin or Cos 3x, 4x, etc.
Sin or Cos 3x, 4x, etc.
Sin or Cos 3x, 4x, etc.
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Special Angles 2
Hyperbolic Functions
Hypergeometric Function
Continued Fraction Tan
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Law Of Cosines
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Law of Sines Proof
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Limit Intro
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Lim Sin x Over x
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d Sin
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Minimum Perimeter of Triangle
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Table Of Integrals
Integration by Parts
Trig Substitutions
Weierstrass t-Substitution
Partial Fractions
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Integral of 1/(1+sqrt(ax))
1-Sin / 1+Sin
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5D Volume of a 5-Sphere
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DE Glossary
Homogeneous Linear DE
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Linear Programming
1 Variable Inequalities
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Lagrange Multipliers Intro
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Series Convergence Tests
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Gauss series for pi
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Linear Recurrence Relation
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Glossary of Number Theory
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Equivalence Relation
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Fundamental Theorem of Arithmetic
GCD, LCM, Bézout's Identity
Divisors, Tau
Möbius function
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Prime Factorization of n!
Euclid's Algorithm
Factorial Divisors
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Legendre Symbol
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Jacobi Symbol
Jacobi Symbol Algorithm
Kronecker Symbol
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Pythagorean Triples
Infinite Descent
Pythagorean Square Triangle
Pythagorean Puzzle
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Perfect Squares
Sums of Squares
Quadratic Residue
Collapse 4 Squares in Sequence4 Squares in Sequence
4 Squares in Sequence, pg 2
4 Squares in Sequence, pg 3
4 Squares in Sequence, pg 4
Fourths and Squares
Square Sandwich
Squares of Permutations of Digits
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Fermat's Last Th, n=3
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Extended Euclidean Algorithm
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Sieve of Eratosthenes
Prime Factorization
Counting Primes
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Small Set
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Sigma Function
Highly Composite Numbers
Totient Function
Euler's Totient Theorem
Sum of Totients Of Divisors of N is N
Pell's Equation
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Adding Two Ways
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Counting Ordered Pairs of Integers
Counting Ordered Pairs -- Example
Counting Ordered Pairs -- Calculator
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Partition Recurrence Relation
Burnside's lemma
Combination Identities
Binomial Theorem
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Pantactic Squares - Jacques Haubrich
Pantactic Squares - Members of a class
Friday the 13th Frequency
Formal Power Series
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AM-GM Inequality
Chebyshev Ineq
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Young's Inequality
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Ptolemy's Inequality
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Sum of SQRTs
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Statistics Glossary
Random Variables
Binomial Distribution
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Linear Regression
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Units Arithmetic
Physics Units
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p is momentum
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Mathematical Induction
Proof that log 2 = 0
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Uninteresting Number Proof
Unexpected Hanging Paradox
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Catalan's Conjecture
Unsolved 36
Collapse 2004 Logic Quiz2004 Logic Quiz
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Find the City
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Scrambled Quote
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Do They Add Up?
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Hidden Word
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Missing Vowels
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Camping in Mexico
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The Hidden Fly
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Pass the Baton
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Question Mark
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Treasure Hunt
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Bag of Potatoes
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Toyota Cars
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Motor Club
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Salary Incease
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Beach Party
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Sheets of Paper
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Collapse 2004 State Logic Quiz2004 State Logic Quiz
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Question 01
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Question 02
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Question 03
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Question 04
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Question 05
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Question 06
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Question 07
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Question 08
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Question 09
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
Collapse 15: Pontiff Locations15: Pontiff Locations
15: Pontiff Locations
Collapse Question 16Question 16
Question 16
Collapse Question 17Question 17
Question 17
Collapse Question 18Question 18
Question 18
Collapse 19: Tower of Hanoi19: Tower of Hanoi
19: Tower of Hanoi
Collapse Question 20Question 20
Question 20
Collapse Circles PuzzlesCircles Puzzles
Collapse Circles Puzzle 1 -- hierarchy of circlesCircles Puzzle 1 -- hierarchy of circles
Circles Puzzle 1
Collapse Circles Puzzle 2 -- clockCircles Puzzle 2 -- clock
Circles Puzzle 2
Collapse Circles Puzzle 3 -- three circlesCircles Puzzle 3 -- three circles
Circles Puzzle 3
Collapse Cube and Circles PuzzleCube and Circles Puzzle
Cube and Circles Puzzle
Collapse Two Circles and a SphereTwo Circles and a Sphere
Two Circles and a Sphere
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Triangle & 3 Circles
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Reciprocal Polynomial
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Prime Arithmetic Sequence
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Integration Recurrence
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Tetromino Soup
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A large product
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Mixture Problems
Collapse How Many Solutions?How Many Solutions?
How Many Solutions?
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Trig is Fun!
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Set Sums
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A Set of Rational Numbers
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Reconstruct the Numbers
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Triangle Area
Collapse Card TrickCard Trick
Card Trick
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Fractal Function
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I'm Thinking of a Number
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Polynomial Madness
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Buckets and Springs
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Really, Really Big Numbers
Collapse Prime Number PuzzlesPrime Number Puzzles
Prime Number Puzzles
A Two Player Game
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A Two-Player Game
Sums of Consecutive Integers
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Rectangle and Quadrilateral Puzzle
Collapse Fermat Pseudoprime PuzzleFermat Pseudoprime Puzzle
Fermat Pseudoprime Puzzle
Collapse Friendly Sets PuzzleFriendly Sets Puzzle
Friendly Sets Puzzle
Collapse 10891089
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Powers of 3 and Powers of 2
Collapse Handshakes PuzzleHandshakes Puzzle
Handshakes Puzzle
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Domino Tiling Puzzle
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Semi-Periodic Sequence Puzzle
Collapse Guess the Numbers PuzzleGuess the Numbers Puzzle
Guess the Numbers Puzzle
Collapse Recurrence Relation Puzzle 1Recurrence Relation Puzzle 1
Recurrence Relation Puzzle 1
Collapse Squares & Fourths PuzzleSquares & Fourths Puzzle
Squares & Fourths Puzzle
Collapse Holey Sphere PuzzleHoley Sphere Puzzle
Holey Sphere Puzzle
Collapse Triangle Partition PuzzleTriangle Partition Puzzle
Triangle Partition Puzzle
Collapse Increasing Function 1Increasing Function 1
Increasing Function 1
Collapse Nondecreasing Integer Sequence TwoNondecreasing Integer Sequence Two
Nondecreasing Integer Sequence Two
Collapse Increasing Function BIncreasing Function B
Increasing Function B
Collapse Integer FunctionInteger Function
Integer Function
Collapse Locker PuzzleLocker Puzzle
Locker Puzzle
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Freeway Puzzle
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Mirrors and Light Puzzle
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Square Inscribed in Sector
Collapse Rooks PuzzleRooks Puzzle
Collapse Rooks PuzzleRooks Puzzle
Rooks Puzzle
Collapse Sum of SeriesSum of Series
Sum of Series
Collapse Pirate PuzzlePirate Puzzle
Pirate Puzzle
Collapse Cut the carpetCut the carpet
Cut the carpet
Collapse Sides of Square TilingSides of Square Tiling
Sides of Square Tiling Answer
Collapse Prove Composite n^4+4Prove Composite n^4+4
Prove Composite Answer
Collapse Arithmetic Sequence of SquaresArithmetic Sequence of Squares
Arithmetic Sequences of Perfect Squares
Arithmetic Sequences of Perfect Squares
Arithmetic Sequences of Perfect Squares
Alternative Math
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Go Away
What Is A Web Server?
Initial Filtering Questions
ISP vs Web Hosting
Web Development Software
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Blue Sky
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ASP Net: Conversion from FrontPage to ASP.Net
ASP Net: My standard page
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Basic ASP
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Calculus Differential Equations
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The webmaster and author of this Math Help site is Graeme McRae.