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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.

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Math Proof Training and Practice

Why intuitive visualizations exist for some math topics but not others

146 threadsSep 4, 2025

Why intuitive visualizations exist for some math topics but not others

Sep 4, 2025

Math Guides, Tutorials and Articles

Tusi couple

47 threadsJul 11, 2026

Tusi couple

Jul 11, 2026

Math Problem of the Week

Proof of Asymptotic Equality: $\sum_{n=0}^\infty a_n\frac{x^n}{n!} \sim ae^x$

1.3K threadsAug 11, 2026

Undergrad Proof of Asymptotic Equality: $\sum_{n=0}^\infty a_n\frac{x^n}{n!} \sim ae^x$

Aug 11, 2026

MATLAB, Maple, Mathematica, LaTeX

What is the difference between DFT and TD-DFT in Gaussian 09 software?

6.5K threadsAug 6, 2026

What is the difference between DFT and TD-DFT in Gaussian 09 software?

Aug 6, 2026

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High School How Do I Correctly Rearrange Formulas Involving Pi and Exponents?

Dooga Blackrazor
Jan 17, 2004 · Replies 2 · Jan 17, 2004

Replies: 2

How did Joseph Fourier die and what were his eccentric habits?

zeronem
Jan 13, 2004 · Replies 2 · Jan 15, 2004

Replies: 2

Undergrad Largest number possible containing any of 9 of 10 digits

Greg Bernhardt
Jan 15, 2004 · Replies 5 · Jan 15, 2004

Replies: 5

High School How Do I Solve for h2 in This Equation?

willwoll100
Jan 14, 2004 · Replies 5 · Jan 15, 2004

Replies: 5

Undergrad How Can You Solve a Geometric Sequence Problem in a Telephoning Tree?

JDK
Jan 14, 2004 · Replies 1 · Jan 14, 2004

Replies: 1

High School Math in MP3 and other music compression

PrudensOptimus
Jan 12, 2004 · Replies 3 · Jan 14, 2004

Replies: 3

High School How do you find the sum of the digits of number N? Say N = 10

PrudensOptimus
Jan 12, 2004 · Replies 6 · Jan 14, 2004

Replies: 6

High School Solving a Word Problem: Rancher Dividing Livestock

RyokoTenchi
Jan 13, 2004 · Replies 1 · Jan 13, 2004

Replies: 1

Graduate How Many Transitional States Exist in an Element with n Sub-Elements?

stratman
Jan 11, 2004 · Replies 6 · Jan 13, 2004

Replies: 6

Undergrad Question concerning math in relation to nature

sero
Jan 9, 2004 · Replies 6 · Jan 12, 2004

Replies: 6

Undergrad Analytical Ability P2

himanshu121
Jan 12, 2004 · Replies 1 · Jan 12, 2004

Replies: 1

High School Why Are Roman Numerals Used in Labeling Cartesian Sections?

kai0ty
Jan 9, 2004 · Replies 1 · Jan 9, 2004

Replies: 1

Undergrad Prove sin(45°+x)+cos(45°+x)=√2cosx

majinknight
Jan 4, 2004 · Replies 12 · Jan 9, 2004

Replies: 12

Undergrad Finding integer solutions to x^y+y^x=100

himanshu121
Jan 8, 2004 · Replies 5 · Jan 9, 2004

Replies: 5

Graduate SoulWhat is the fundamental model of CIS according to Complementary Logic?

Organic
Dec 28, 2003 · Replies 25 · Jan 8, 2004

Replies: 25

Undergrad How to Prove AM > GM for Two Positive Numbers?

jake_at
Jan 8, 2004 · Replies 1 · Jan 8, 2004

Replies: 1

High School Solving for fF in K = fF/(1-fF)

Monique
Jan 3, 2004 · Replies 7 · Jan 5, 2004

Replies: 7

High School Where did I go wrong solving 2sin²x = 1 - cos x?

majinknight
Jan 3, 2004 · Replies 3 · Jan 3, 2004

Replies: 3

Undergrad Tricky Tricky little Identities

majinknight
Jan 3, 2004 · Replies 2 · Jan 3, 2004

Replies: 2

High School How many ways are there to prove Pythagorean Theorem?

StarThrower
Dec 21, 2003 · Replies 6 · Jan 3, 2004

Replies: 6

High School How come zero and one are so important to our number system?

Gale
Jan 2, 2004 · Replies 4 · Jan 3, 2004

Replies: 4

High School Starting from 2 to remove division by zero from the equation.

abstract
Jan 2, 2004 · Replies 5 · Jan 3, 2004

Replies: 5

Undergrad How Was the Crossed Ladder Problem Formula Derived?

Moni
Jan 2, 2004 · Replies 1 · Jan 2, 2004

Replies: 1

Undergrad What simpler indentity is equal to sin(x) - cos(x)

Matt Jacques
Dec 28, 2003 · Replies 10 · Jan 1, 2004

Replies: 10

Undergrad Recommended number theory books for beginners

PiRsq
Nov 9, 2003 · Replies 2 · Jan 1, 2004

Replies: 2

What is mathematics to you?

Inquiring_Mike
Sep 28, 2003 · Replies 26 · Jan 1, 2004

Replies: 26

High School Area of irregular hexagon patio with 1-foot tiles

Greg Bernhardt
Dec 28, 2003 · Replies 9 · Dec 30, 2003

Replies: 9

Undergrad Question in analytical geometry

Chen
Dec 30, 2003 · Replies 2 · Dec 30, 2003

Replies: 2

Graduate What Evidence Supports the Concept of Infinity?

pallidin
Dec 29, 2003 · Replies 13 · Dec 29, 2003

Replies: 13

High School Q. How many students are in Sally's class?

Peter Pan
Nov 7, 2003 · Replies 14 · Dec 29, 2003

Replies: 14

Undergrad What is Combinatorial Geometry and Who Founded It?

MathematicalPhysicist
Sep 17, 2003 · Replies 1 · Dec 29, 2003

Replies: 1

For Those of You Who Enjoy Puzzles

split
Dec 23, 2003 · Replies 4 · Dec 27, 2003

Replies: 4

Undergrad Calculating Distance of a Planet from its Sun for Energy Determination

Blissfulpain
Dec 22, 2003 · Replies 6 · Dec 25, 2003

Replies: 6

Graduate Choosing an applied mathematics research topic: cryptography, population, or fingerprints

ahmad
Dec 22, 2003 · Replies 1 · Dec 23, 2003

Replies: 1

Graduate The number of absolutely true statements

phoenixthoth
Nov 14, 2003 · Replies 42 · Dec 21, 2003

Replies: 42

What is the proper notation for recursion in LaTex?

Bob3141592
Dec 20, 2003 · Replies 3 · Dec 20, 2003

Replies: 3

Graduate Game Theory - Nash Equilibrium

Ohm
Dec 20, 2003 · Replies 3 · Dec 20, 2003

Replies: 3

High School How to Solve the Chocolate Eating Math Brain Teaser?

amathea
Dec 20, 2003 · Replies 1 · Dec 20, 2003

Replies: 1

What is the solution to the wild and unsolved problem proposed by Greg?

Greg Bernhardt
Dec 18, 2003 · Replies 17 · Dec 19, 2003

Replies: 17

Where Can I Find Websites on Math Magics and Tricks?

franz32
Dec 18, 2003 · Replies 2 · Dec 19, 2003

Replies: 2

High School What are some real world applications of sine and cosine functions?

Landdogger
Dec 17, 2003 · Replies 6 · Dec 18, 2003

Replies: 6

High School Advanced Algebra II/Trig finals Friday

gcn_zelda
Dec 17, 2003 · Replies 4 · Dec 18, 2003

Replies: 4

How Many Can Read Hex? You and the Dead Included

Anttech
Dec 17, 2003 · Replies 13 · Dec 17, 2003

Replies: 13

Biographies of Great Mathematicians: A One-Stop Resource

Moni
Dec 16, 2003 · Replies 2 · Dec 16, 2003

Replies: 2

High School Counting Methods: Easier Ways to Solve Problems

matrix_204
Dec 13, 2003 · Replies 1 · Dec 13, 2003

Replies: 1

Undergrad 2 fundmental ways of cryptography asymeteric and symeteric

hell18
Dec 6, 2003 · Replies 4 · Dec 13, 2003

Replies: 4

Is there an online version of the IB Math formula book available?

informal
Dec 10, 2003 · Replies 1 · Dec 13, 2003

Replies: 1

Should it be upside or downside

MathematicalPhysicist
Dec 12, 2003 · Replies 5 · Dec 12, 2003

Replies: 5

Undergrad Is Partition Theory Concerned with Multiples of a Number?

MathematicalPhysicist
Aug 11, 2003 · Replies 5 · Dec 12, 2003

Replies: 5

Undergrad Solving 3rd and 4th level equations

Gunni
Dec 10, 2003 · Replies 2 · Dec 12, 2003

Replies: 2

Undergrad Find a polynomial of degree THREE with zeros 0 and i

lauren6568
Dec 10, 2003 · Replies 5 · Dec 11, 2003

Replies: 5

Undergrad Intersection of planes and lines in space

matrix_204
Dec 9, 2003 · Replies 3 · Dec 11, 2003

Replies: 3

High School How do you make the curly L for the LaPlace transform in tex?

KillaMarcilla
Dec 10, 2003 · Replies 1 · Dec 10, 2003

Replies: 1

Graduate When category theory and set theory meet

MathematicalPhysicist
Dec 10, 2003 · Replies 1 · Dec 10, 2003

Replies: 1

High School Preparing for Geometry/Algebra Test - Parametric Equations

decibel
Dec 9, 2003 · Replies 2 · Dec 10, 2003

Replies: 2

High School Examples of infinity in the physical world

Adam
Nov 21, 2003 · Replies 19 · Dec 9, 2003

Replies: 19

Graduate Why 13 distinct real numbers must satisfy an arctangent inequality

suyver
Dec 2, 2003 · Replies 18 · Dec 7, 2003

Replies: 18

High School Is Division by Zero Really Impossible?

esalkin
Nov 7, 2003 · Replies 8 · Dec 5, 2003

Replies: 8

High School Where is the error in the proof that 2+2=5?

Erdem
Nov 28, 2003 · Replies 13 · Dec 5, 2003

Replies: 13

High School What is 0 to the power of 0 equal to?

Bailey
Dec 5, 2003 · Replies 7 · Dec 5, 2003

Replies: 7

Undergrad Graph Theory: Dijkstra's Algorithm

wubie
Dec 5, 2003 · Replies 2 · Dec 5, 2003

Replies: 2

High School Trigonometric Relation Formulas

TheDestroyer
Dec 1, 2003 · Replies 13 · Dec 4, 2003

Replies: 13

Undergrad Intro Graph Theory: Components Connectivity

wubie
Dec 4, 2003 · Replies 1 · Dec 4, 2003

Replies: 1

Undergrad Just for fun : What's the next number in this sequence ?

uart
Dec 4, 2003 · Replies 8 · Dec 4, 2003

Replies: 8

High School What is theta and how do I find sin/cos/tan of it in pendulum problems?

BluE
Dec 2, 2003 · Replies 8 · Dec 3, 2003

Replies: 8

Graduate Sum of 1/primes for all primes

suyver
Dec 3, 2003 · Replies 8 · Dec 3, 2003

Replies: 8

High School How Do You Determine the Unit Digit of a^b?

PrudensOptimus
Dec 2, 2003 · Replies 3 · Dec 2, 2003

Replies: 3

High School What is a coefficient and how is it used in math?

Vosh
Dec 1, 2003 · Replies 2 · Dec 2, 2003

Replies: 2

High School Can Infinity Change the Value of .9 Repeating?

Justin Horne
Dec 1, 2003 · Replies 9 · Dec 2, 2003

Replies: 9

Undergrad What was the perfect excuse for trying out suit symbols in TeX?

Hurkyl
Nov 29, 2003 · Replies 4 · Dec 2, 2003

Replies: 4

Undergrad What are the latest research developments on Heron's Formula?

PrudensOptimus
Nov 30, 2003 · Replies 4 · Dec 1, 2003

Replies: 4

Graduate The Role of Bessel Functions in Frequency Modulation Theory

bosonics
Nov 30, 2003 · Replies 1 · Dec 1, 2003

Replies: 1

High School What is the radius of a circle with an area of 154 square centimeters?

Superman89
Nov 28, 2003 · Replies 2 · Nov 30, 2003

Replies: 2

High School How to Correctly Solve L = 1800cc - 72cm?

Superman89
Nov 28, 2003 · Replies 12 · Nov 30, 2003

Replies: 12

High School Chinese Checkers: Is There an Optimal Strategy?

Brad_Ad23
Nov 28, 2003 · Replies 6 · Nov 29, 2003

Replies: 6

Graduate Could someone solve for s/p (or p/s) in terms of v?

Sikz
Nov 28, 2003 · Replies 1 · Nov 29, 2003

Replies: 1

High School Find the dimensions of the rectangular field.

Superman89
Nov 28, 2003 · Replies 4 · Nov 28, 2003

Replies: 4

High School Cubic Centimeters: Do I Need to Use "cc"?

Superman89
Nov 28, 2003 · Replies 2 · Nov 28, 2003

Replies: 2

High School How long must a rectangular box be to hold 1800 cubic cm with 12 cm width and 6 cm height?

Superman89
Nov 28, 2003 · Replies 2 · Nov 28, 2003

Replies: 2

High School Computing sin, cos, and tan by hand

kai0ty
Nov 19, 2003 · Replies 16 · Nov 28, 2003

Replies: 16

The simplist concept in mathematics

Loren Booda
Nov 16, 2003 · Replies 11 · Nov 28, 2003

Replies: 11

High School Why Do We Use Base 10 in Everyday Life?

brum
Nov 26, 2003 · Replies 6 · Nov 27, 2003

Replies: 6

Graduate If a product of rationals has limit finite, is the limit irrational?

uart
Nov 27, 2003 · Replies 2 · Nov 27, 2003

Replies: 2

Graduate What is the meaning of the 'real wave function' in quantum mechanics?

mpsychdoctor
Nov 24, 2003 · Replies 10 · Nov 27, 2003

Replies: 10

Graduate Finding f such that f(f(x)) = 2^x

phoenixthoth
Oct 28, 2003 · Replies 18 · Nov 26, 2003

Replies: 18

Graduate Looking for Easy proof of Pi Irrational

uart
Nov 2, 2003 · Replies 14 · Nov 26, 2003

Replies: 14

Graduate Proving a Sequence Doesn't Repeat: What's the Best Method?

StephenPrivitera
Nov 24, 2003 · Replies 2 · Nov 24, 2003

Replies: 2

Graduate Possible to evaluate the gamma function analytically?

LeBrad
Nov 22, 2003 · Replies 4 · Nov 24, 2003

Replies: 4

Undergrad How many digits does (n!)^3 have for n=1 to 99?

PrudensOptimus
Nov 23, 2003 · Replies 12 · Nov 24, 2003

Replies: 12

Undergrad Finding surface area of a sector of a sphere

philipc
Nov 22, 2003 · Replies 14 · Nov 24, 2003

Replies: 14

Undergrad Finding the xyz Coordinates of Point C in an Isosceles Triangle

Sikz
Nov 23, 2003 · Replies 3 · Nov 24, 2003

Replies: 3

Undergrad Cubic and Quartics, solving methods?

PrudensOptimus
Nov 21, 2003 · Replies 3 · Nov 22, 2003

Replies: 3

Undergrad N00b here and i got a question (logarithms)

mathdummy
Nov 21, 2003 · Replies 3 · Nov 21, 2003

Replies: 3