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

Undergrad How do I prove the identity sin(4x) = 4sin(x)cos^3(x)-4sin^3(x)cos(x)?

  • Slicktacker
  • · Replies 4 ·
Replies
4

Undergrad How to Solve Ln(x) + x=y for x

  • Dinesh
  • · Replies 1 ·
Replies
1

Undergrad Self-taught wannabe any advice?

  • nerdygirl
  • · Replies 24 ·
Replies
24

High School Mental Calculation - How good are you?

  • Hyperreality
  • · Replies 11 ·
Replies
11

What are the applications of coloring a graph?

  • Lotte
  • · Replies 1 ·
Replies
1

High School Which Books Are Recommended for Learning General Math?

  • Secular Angel
  • · Replies 2 ·
Replies
2

High School Slicing a Square/Rectangle into 8 Pieces with 3 Cuts

  • Imparcticle
  • · Replies 19 ·
Replies
19

High School Math Trick: Reveal Common Answer with Few Steps

  • anil
  • · Replies 3 ·
Replies
3

High School What Are the Properties of a Point and a Line?

  • Didd
  • · Replies 21 ·
Replies
21

Graduate How many compartments can be created by intersecting two cubes in 3d?

  • Jin314159
  • · Replies 12 ·
Replies
12

Undergrad How Can I Understand Obversion in Venn Diagrams for the First Time?

  • omin
  • · Replies 2 ·
Replies
2

Math Olympiad in Athens: Is it a Sport?

  • BobG
  • · Replies 2 ·
Replies
2

Undergrad What is the maximum length (plus or minus 1 inch)?Maximum length: 200 inches.

  • BobG
  • · Replies 12 ·
Replies
12

Graduate Can Doubling Elements in a Sequence Ensure Divisibility by Their Position?

  • Ben1587
  • · Replies 4 ·
Replies
4

High School Convert Decimal to Binary - Get Help Here

  • x_endlessrain_x
  • · Replies 3 ·
Replies
3

Graduate Non-linear chaotic dynamical systems and psychology?

  • s0l0m0nsh0rt
  • · Replies 2 ·
Replies
2

Graduate Proving a[n] = Θ(lg n): A Case Study

  • e(ho0n3
  • · Replies 2 ·
Replies
2

Undergrad Ball coordinates to cartesian coordinates

  • martine
  • · Replies 5 ·
Replies
5

High School What is an Independent Variable?

  • Poweranimals
  • · Replies 7 ·
Replies
7

Undergrad Solving the Impossible Problem: A Mathematical Challenge

  • gravenewworld
  • · Replies 23 ·
Replies
23

High School Proving "If a Segment is Given, Then it Has Exactly One Midpoint"

  • Imparcticle
  • · Replies 7 ·
Replies
7

High School How can I factor large numbers into their prime form?

  • Krazie
  • · Replies 20 ·
Replies
20

Undergrad How Close Can You Get to Pi Ohms Using Ten Resistors?

  • ceptimus
  • · Replies 21 ·
Replies
21

High School Formulas related to progressions

  • neenuroy
  • · Replies 2 ·
Replies
2

High School This Number Sequence is Driving me MAD

  • recon
  • · Replies 2 ·
Replies
2

Undergrad What is the Difference Between Undefined and Indeterminate?

  • Feynman
  • · Replies 39 ·
2
Replies
39

Maths Study & Motivation: Your Thoughts

  • gazzo
  • · Replies 19 ·
Replies
19

Undergrad Solving for Unknown Values in Overlaid Grids

  • phil_drew
  • · Replies 2 ·
Replies
2

Undergrad Help with an indirect proof (RAA)

  • aychamo
  • · Replies 2 ·
Replies
2

High School Struggling with Logic Test Question 1: Need Help?

  • Geoffrey F. Miller
  • · Replies 4 ·
Replies
4

Graduate What Does Pure Mathematics Reveal About Our Universe?

  • Imparcticle
  • · Replies 8 ·
Replies
8

Constant Function and an Exponential Function

  • Antimatter
  • · Replies 7 ·
Replies
7

Undergrad Who Lives Where? A Logic Puzzle with Neighbors and Clues!

  • vikasj007
  • · Replies 21 ·
Replies
21

Undergrad Geometry Challenge: Catch a Fly Ball on an Airless Planet

  • GCT
  • · Replies 2 ·
Replies
2

High School Solve for Soda Cost given Hot Dog Price and Total Income

  • Monique
  • · Replies 13 ·
Replies
13

High School Solve y = -1/4x - 12 Perpendicular Through (3, -4)

  • Poweranimals
  • · Replies 9 ·
Replies
9

High School Solve Cap'n Threelegs' Puzzling Sign Problem!

  • CuriousPerson
  • · Replies 6 ·
Replies
6

High School Graphing Linear Equations: Finding Intercepts

  • Poweranimals
  • · Replies 3 ·
Replies
3

Undergrad What is the issue with equivalent statements and complex numbers?

  • Andante
  • · Replies 3 ·
Replies
3

Graduate Enjoy!Can the Sum of Reciprocal Powers be Represented by an Infinite Product?

  • quddusaliquddus
  • · Replies 17 ·
Replies
17

High School Homework help (Basic Algebra-Division of polynomials)

  • Krazie
  • · Replies 7 ·
Replies
7

High School If x+2y=2 and (x+y)2=9, what is the value of y?

  • Monique
  • · Replies 3 ·
Replies
3

Graduate Can You Devise a Winning Strategy for This Blindfolded Cup Flipping Game?

  • Ben1587
  • · Replies 12 ·
Replies
12

Undergrad What is the Solution to This Inequality Problem?

  • Jin314159
  • · Replies 30 ·
2
Replies
30

High School Another annoying one divide zero thread.

  • uart
  • · Replies 8 ·
Replies
8

Undergrad Calculating Probability of Rolling a 7 with Dice

  • Ursole
  • · Replies 22 ·
Replies
22

Undergrad Solving the Distance Travelled by an Accelerating Car

  • vikasj007
  • · Replies 16 ·
Replies
16

High School How Do I Calculate My Internet Speeds at Home and Abroad with a 4:1 Ratio?

  • ramguru
  • · Replies 3 ·
Replies
3

Undergrad Most Useless Math Topics for Experienced Scientists & Educators

  • JohnDubYa
  • · Replies 95 ·
4
Replies
95

High School What is the domain of 15x^2 + 3x - sqrt2 (x)?

  • trip7
  • · Replies 10 ·
Replies
10

Undergrad Recurrence relations and sequences

  • naav
  • · Replies 7 ·
Replies
7

High School Poker Challenge: Three of a Kind vs. Straight Flush

  • einsteinian77
  • · Replies 2 ·
Replies
2

Graduate Find the Underweight Coins: A Coin-Shaving Challenge

  • vikasj007
  • · Replies 9 ·
Replies
9

Graduate Maximize Gains with Coin-Flip Strategy

  • Ursole
  • · Replies 9 ·
Replies
9

High School Whats the purpose of squaring?

  • Dook
  • · Replies 14 ·
Replies
14

Undergrad Pi miscalculated or not irrational?

  • Mr. X
  • · Replies 7 ·
Replies
7

High School Finding the Fake Coin in Minimum Turns

  • vikasj007
  • · Replies 9 ·
Replies
9

Undergrad Can you give the next two rows?

  • no genius
  • · Replies 4 ·
Replies
4

High School Solving for the Length of a Leaning Tower: A Simple Guide

  • martine
  • · Replies 4 ·
Replies
4

Undergrad Solve for "a" in Polynomial Function: 2x^3 - ax^2 - 12x - 7

  • josephcollins
  • · Replies 2 ·
Replies
2

Graduate 2. Order Linear Inhomogenous Recurrence Relations with Constant Coefficients

  • e(ho0n3
  • · Replies 7 ·
Replies
7

Undergrad Is There a Fifth Order 3D Pythagorean Theorem?

  • dperez3894
  • · Replies 19 ·
Replies
19

Graduate Can Pure Math Experience a Paradigm Shift Without Experimental Validation?

  • Organic
  • · Replies 12 ·
Replies
12

Graduate Understanding the Lorentz Transformation: Unpacking the Mathematical Steps

  • dperez3894
  • · Replies 3 ·
Replies
3

Undergrad Recommended Math Courses for Physics and Math Majors at State U

  • theFuture
  • · Replies 6 ·
Replies
6

Undergrad Divisibility by 11 in Number Theory

  • lhuyvn
  • · Replies 6 ·
Replies
6

High School Find Out Who Owns the Fish: 5 Houses, 5 Owners

  • Evo
  • · Replies 2 ·
Replies
2

High School Would someone me with some basic algebra?

  • Krazie
  • · Replies 9 ·
Replies
9

Undergrad What is a root with multiplicity?

  • e(ho0n3
  • · Replies 2 ·
Replies
2

Undergrad Find the equation of the circle

  • anil kumar
  • · Replies 5 ·
Replies
5

High School Another question,(hope it isnt boring)

  • idontthinkright
  • · Replies 12 ·
Replies
12

High School Can I Teach Myself Calculus Before Senior Year?

  • .:Maverick:.
  • · Replies 20 ·
Replies
20

Graduate Algebraic geometry where to begin?

  • styler
  • · Replies 5 ·
Replies
5

Undergrad Math Contest Question: Solving the Ball Color Puzzle with 3 Different Colors

  • Parth Dave
  • · Replies 3 ·
Replies
3

Undergrad Factorials, handshake problem, help

  • abertram28
  • · Replies 19 ·
Replies
19

Undergrad What Was the Mathematician's Solution for the Princes' Dilemma?

  • Gokul43201
  • · Replies 4 ·
Replies
4

Graduate Is Motion an Illusion? The Paradox of Infinite Divisibility in Space

  • StupidHead
  • · Replies 11 ·
Replies
11

High School Participating in the Putnam Exam as a High School Student: Is it Possible?

  • Ben1587
  • · Replies 2 ·
Replies
2

Graduate Proofs on the rationality of pi

  • lvlastermind
  • · Replies 12 ·
Replies
12

Graduate A dimensional proof of Pythagoras' thm

  • ahrkron
  • · Replies 1 ·
Replies
1

High School Can Painter Mix Paint in Tin and Pint Glass?

  • ceptimus
  • · Replies 24 ·
Replies
24

Undergrad Algorithm to find the train's location and velocity?

  • Eleanor
  • · Replies 4 ·
Replies
4

Solving Predators Hunting Preys - Tips from Experts

  • TenNen
  • · Replies 6 ·
Replies
6

Undergrad Tile a plane with three sided figures

  • mee
  • · Replies 4 ·
Replies
4

Undergrad Hypercomplex Numbers: What & How?

  • gravenewworld
  • · Replies 11 ·
Replies
11

High School Problem stating: if A = x - 1/x, find A - 1/A

  • trip7
  • · Replies 4 ·
Replies
4

High School How to Get Wolf, Goat, and Cabbage to Island B?

  • balrog
  • · Replies 17 ·
Replies
17

Graduate Infinity/Negative Infinity and Zero

  • Sikz
  • · Replies 5 ·
Replies
5

Undergrad How Many Possible Routes in the Traveling Salesman Problem?

  • O Great One
  • · Replies 1 ·
Replies
1

Undergrad Problem with polynomial division and 'i'

  • Slicktacker
  • · Replies 11 ·
Replies
11

High School Puzzle: Who Pays More in the Beer Hall?

  • quartodeciman
  • · Replies 9 ·
Replies
9

High School Can You Solve These Trigonometric Identity Problems?

  • Johnny Neutron
  • · Replies 3 ·
Replies
3

Undergrad Searching for a non-negative integer

  • Nec
  • · Replies 13 ·
Replies
13

Graduate [tex] f(x) = x^x [/tex]Given this function, defined, let's say for

  • Paul
  • · Replies 9 ·
Replies
9

Undergrad Maths layperson in need of help

  • larashka
  • · Replies 5 ·
Replies
5

High School Where Can I Learn About the Ackley Function?

  • Nec
  • · Replies 4 ·
Replies
4

Undergrad What is the value of Y in this equation?

  • Mag
  • · Replies 6 ·
Replies
6

What Color is the Bear Outside the Hunter's Cabin?

  • Gokul43201
  • · Replies 15 ·
Replies
15

High School Square a Number & Increase/Decrease by 5 for Perfect Square

  • scox
  • · Replies 15 ·
Replies
15

Undergrad Measuring 45 Minutes with Ropes & Liquid

  • Gokul43201
  • · Replies 6 ·
Replies
6