General Math Forum

Join in expert discussion on general math topics that are not applicable to the specific categories. This includes topics are usually high school math level. Homework help is available.

Threads

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4

Finding $\angle PCA$ in Triangle ABC with $\angle ANB = 90^\circ$

  • maxkor
  • · Replies 13 ·
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13

Inequality - find the largest K in (a+b+c+d)^2≥Kbc

  • lfdahl
  • · Replies 7 ·
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7

High School Great Magic Triangle Math Puzzle

  • jedishrfu
  • · Replies 8 ·
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8

High School (Proof) Two right triangles are congruent.

  • vantroff
  • · Replies 2 ·
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2

Undergrad Arbirtary Extraction of Primes - From Ideal Fractal(s)?

  • Sinsearach
  • · Replies 7 ·
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7

How can you solve this equation using an alternate method?

  • xSilentShuriken
  • · Replies 6 ·
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6

Prove the trig inequality ∑α∈{A,B,C}1/[1+sin(α/2)]≥2

  • lfdahl
  • · Replies 4 ·
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4

Find the minimal value |ac−b|≤b

  • lfdahl
  • · Replies 4 ·
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4

AB=AC,∠ABD=60°,∠ADB=70°,∠BDC=40°,find∠DBC

  • Albert1
  • · Replies 2 ·
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2

When is AB parallel to XY in triangle ABC?

  • mathmari
  • · Replies 5 ·
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5

High School Finding my mistake with tan(4π/3 + 5π/4) using sum identities

  • Thinkaholic
  • · Replies 3 ·
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3

Solving $y>0$ given $[y]^2=y\times(y)$ and Proving Inequalities

  • Albert1
  • · Replies 2 ·
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2

Set of 2015 Consecutive Positive Ints with 15 Primes

  • lfdahl
  • · Replies 3 ·
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3
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2

Solve the cubic equation 4u^3+3u−3=0

  • lfdahl
  • · Replies 2 ·
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2

Possibilities for the side and angle of the triangle

  • mathmari
  • · Replies 10 ·
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10

Show Triangle ABC Similarity Type Independence of B,C

  • mathmari
  • · Replies 11 ·
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11

Undergrad Visualizing Solid Angle of a 3d Object (say a Sphere)

  • Adjax
  • · Replies 6 ·
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6

Insights Can Angles be Assigned a Dimension? - Comments

  • haruspex
  • · Replies 105 ·
4
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105

Challenge: Is cos(pi/60) transcendental?

  • Prove It
  • · Replies 1 ·
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1
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3

High School How to build an equation or expression?

  • pairofstrings
  • · Replies 18 ·
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18

High school inequality |2−(−1)n−l|≥a

  • solakis1
  • · Replies 2 ·
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2

Quadratic function through points (-2,1), (-6,1), (2,-7)

  • missnerdist
  • · Replies 2 ·
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2

Solving Algebraic Inequality with $n$ Positive Real Numbers

  • lfdahl
  • · Replies 5 ·
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5

What is the value of Angle BMC in Triangle ABC?

  • Albert1
  • · Replies 1 ·
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1

How many days will it take B to finish the remaining work?

  • mathdad
  • · Replies 9 ·
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9

Undergrad What Is the Minimal Number of Clusters With Shared Descriptors?

  • lavoisier
  • · Replies 5 ·
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5

High School What is the process for finding the LCD of rational expressions and equations?

  • awholenumber
  • · Replies 21 ·
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21

Numerical Analysis problem Newton's method

  • carrab
  • · Replies 2 ·
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2

Pythagorean Theorem: Unexpected Finding

  • Angel11
  • · Replies 1 ·
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1

Why isn't {0}^{3}+{0}^{3}={0}^{3} a proof for Fermat's Last Theorem?

  • Angel11
  • · Replies 3 ·
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3

Oxidation-Reduction in 2Ca + O2 -> 2CaO Reaction

  • markosheehan
  • · Replies 3 ·
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3

Undergrad Mathematics/AI and a School Cheating

  • jedishrfu
  • · Replies 4 ·
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4

Help with problems #17 and #22

  • missnerdist
  • · Replies 4 ·
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4

Graduate Recreating chebychev coefficient from an article

  • dan_smith
  • · Replies 4 ·
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4

How to calculate LCM for rational equations ?

  • kupid
  • · Replies 4 ·
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4

High School Finding integer solutions to linear Diophantine equations

  • 69911e
  • · Replies 4 ·
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4

Cruiser & Destroyer: Finding the Closest Point

  • markosheehan
  • · Replies 1 ·
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1

Practice problems of Rational Equations ?

  • kupid
  • · Replies 10 ·
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10

Equation of y=x³-x²+x-1 after reflection in both axes

  • missnerdist
  • · Replies 1 ·
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1

Undergrad Proof of irrationality of sqrt2 in Penroses Road to Reality

  • Feymar
  • · Replies 2 ·
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2

High School Random thoughts on Fibonnacci sequence

  • parshyaa
  • · Replies 4 ·
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4

Binomial coefficient challenge

  • lfdahl
  • · Replies 2 ·
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2

High School Counting intersections of lines in a triangle

  • haruspex
  • · Replies 30 ·
2
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30

High School What are the different methods of factoring polynomials?

  • awholenumber
  • · Replies 6 ·
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6

Undergrad Testing Primality of 377 with Divisibility

  • rajeshmarndi
  • · Replies 7 ·
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7
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High School What are the applications of roots of a polynomial?

  • pairofstrings
  • · Replies 5 ·
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5

Undergrad I would simply like to know how to get 2^k.

  • Terrell
  • · Replies 4 ·
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4

High School Function that equals 0 when x=0 and 1 when x≠0

  • Viet Tu
  • · Replies 10 ·
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10

High School Solving exponential equations with multiple terms

  • imdone
  • · Replies 13 ·
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13

How can I find the range of a hyperbolic curve using its graph?

  • mathdad
  • · Replies 6 ·
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6

How do I solve this inequality with positive coefficients?

  • mathdad
  • · Replies 14 ·
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14

What is the range and inverse of the function y = 1/x?

  • mathdad
  • · Replies 3 ·
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3

How can inverse functions help us find the range algebraically?

  • mathdad
  • · Replies 4 ·
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4

How Can You Prove the Trigonometric Identity Cos^6A+Sin^6A=1-3Sin^2ACos^2A?

  • Silver Bolt
  • · Replies 6 ·
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6

Help with attached math questions

  • afkurma
  • · Replies 1 ·
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1

Domain of Function Involving Roots

  • mathdad
  • · Replies 17 ·
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17

Minimum speed for ship B to intercept ship A moving NE

  • markosheehan
  • · Replies 5 ·
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5

How do we solve a quadratic inequality with multiple factors?

  • mathdad
  • · Replies 3 ·
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3

How Do You Solve This Quadratic Inequality: x - [10/(x - 1)] ≥ 4?

  • mathdad
  • · Replies 3 ·
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3

Solving x^3 + 1/x^3 ≥ 3

  • mathdad
  • · Replies 9 ·
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9

Can graph be used to solve inequalities without algebra?

  • mathdad
  • · Replies 2 ·
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2

Solving Quadratic Inequalities

  • mathdad
  • · Replies 8 ·
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8

How Do You Solve and Graph This Quadratic Inequality?

  • mathdad
  • · Replies 2 ·
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2
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2

High School Relation between ##d## and ##\theta##

  • Adel Makram
  • · Replies 2 ·
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2

Evaluating a piecewise function at x = 0 and x = 4

  • mathdad
  • · Replies 2 ·
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2
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18

Is the solution to the quadratic inequality (-x + 6)/(x - 2) < 0?

  • mathdad
  • · Replies 5 ·
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5

Undergrad How Does the Hyperbolic Axiom Define a Maximal Triangle?

  • Quantum Velocity
  • · Replies 7 ·
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7

Find Perimeter of Rectangle with Given Area and Width

  • mathdad
  • · Replies 21 ·
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21
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2

Evaluating Chosen Numbers in Quadratic Inequality

  • mathdad
  • · Replies 7 ·
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7

How to Learn Domain,Range and Real Number Of Function Mathematics ?

  • Apurbow
  • · Replies 2 ·
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2

Domain and range of 8 functions with roots and logarithms

  • Apurbow
  • · Replies 1 ·
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1

High School How can I determine if my research results are worthy of publication?

  • Aidan Davis
  • · Replies 2 ·
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2

How to Select the Correct X-Value for Testing Inequalities?

  • mathdad
  • · Replies 4 ·
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4

Find Area Formula of Rectangle

  • mathdad
  • · Replies 2 ·
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2

Finding m and n for intersecting plane and line, then orthogonal plane

  • Lancelot1
  • · Replies 2 ·
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2

High School What are ways that someone would study synthetic geometry?

  • Mikaelochi
  • · Replies 8 ·
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8

Why is the radius squared in the area formula for a circle?

  • mathdad
  • · Replies 4 ·
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4

Is the inequality correctly solved by multiplying each fraction by 100?

  • mathdad
  • · Replies 2 ·
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2

Can I use the theorem for solving the given inequality?

  • mathdad
  • · Replies 3 ·
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3

What is the area of a triangle given (2, 3), (4, 5), and (6, 7)?

  • mathdad
  • · Replies 6 ·
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6

What is the domain of each variable in the given expressions?

  • mathdad
  • · Replies 2 ·
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2

What is the Domain of Each Variable in a Rational Function?

  • mathdad
  • · Replies 2 ·
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2

Graduate Is this system of equations (numerically) solvable?

  • dumbperson
  • · Replies 12 ·
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12

What is the difference between the symbols ÷ / in division?

  • chrisgk
  • · Replies 6 ·
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6

Undergrad How to divide polynomials in z to get the power series

  • MikeSv
  • · Replies 4 ·
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4

Translating distance statements into absolute value notation

  • mathdad
  • · Replies 2 ·
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2

Is this the correct way to rewrite absolute value statements?

  • mathdad
  • · Replies 2 ·
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2

How to Rewrite Absolute Value Expressions Without Absolute Values?

  • mathdad
  • · Replies 2 ·
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2

How many integers in between \sqrt{19} and \sqrt{90}

  • prasadini
  • · Replies 2 ·
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2

How does the equation y = 3 + (4/2)x represent Bob's cake baking rate?

  • mathdad
  • · Replies 4 ·
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4

Undergrad Some questions from a numerical analysis book

  • awholenumber
  • · Replies 15 ·
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15

High School Problem solving with hyperbolic functions

  • Tahmeed
  • · Replies 3 ·
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3