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.
Sub-forums
Threads
Undergrad Think I need to find a way of exercising my brain
- smulc
- · Replies 6 ·
High School Visually attractive Mandelbrot zoom points
- kweierstrass
- · Replies 2 ·
Graduate Factoring large N into prime factors
- bert2612
- · Replies 2 ·
Undergrad Last two digits of 1! + 2! + ... + 100!?
- MadScientist 1000
- · Replies 20 ·
When is Happy Pi Day for Europeans?
- Char. Limit
- · Replies 15 ·
High School What is the Fraction of One Point Compared to an Infinite Line?
- CrossboneSRB
- · Replies 3 ·
Proving $(a+b,\ a^2-ab+b^2)=1$ or $3$
- alexmahone
- · Replies 2 ·
High School Transposition/re-arrangement of equation
- russjai
- · Replies 1 ·
High School Are You Making These Mistakes When Solving Equations?
- Hobin
- · Replies 10 ·
Bob's 9 Minute Hourglass Challenge
- alexmahone
- · Replies 7 ·
Undergrad To solve an odd problem using tetration
- Frogeyedpeas
- · Replies 1 ·
Why Are Math Textbooks So Expensive?
- dijkarte
- · Replies 11 ·
Graduate Fewest number of segments to identify a know symbol
- jdlinke
- · Replies 1 ·
High School Parent Functions of Rational Functions
- ABC_123
- · Replies 4 ·
Pairwise difference of 20 positive integers. At least four of em are equal.
- caffeinemachine
- · Replies 6 ·
Set theoretic "Puzzle" I made up.
- mvCristi
- · Replies 7 ·
Proving Degrees of Vertices in Graph G
- Amer
- · Replies 3 ·
Graduate (A+B+C ) ^ (X + Y + Z ) of arbitrary complexity
- jebusv20
- · Replies 3 ·
High School How can I simplify [1-(k(sin^2) θ)] using trigonometric identities?
- princy
- · Replies 1 ·
Graduate Squaring the Circle: Why is Finding an Exact Solution so Difficult?
- bobsmith76
- · Replies 7 ·
Undergrad What Are the Periodic Patterns of Sine Functions in Trigonometry?
- greggory
- · Replies 4 ·
Undergrad What function or operation am I looking for?
- minio
- · Replies 3 ·
How to Solve the Trigonometric Equation cos5x+cosx=cos6x?
- anemone
- · Replies 2 ·
Graduate Solving Unsolved Trig Identity: sum[0 to x](sin(x))=180 * sin(x/2)^2 + sin(x)/2
- crash_matrix
- · Replies 4 ·
Undergrad Dividing by Zero=undefined or complex infinite?
- physicsdreams
- · Replies 7 ·
High School What does it mean when a function is undefined?
- lonewolf219
- · Replies 5 ·
Graduate 4 * sin(ϕ * 32)(A new theorem in development)
- greggory
- · Replies 3 ·
High School Why does the Unit Circle work?
- physicsdreams
- · Replies 5 ·
Undergrad No One Has Been Able to Answer This
- Roger Thomas
- · Replies 17 ·
General questions on Rudin's Baby book
- issacnewton
- · Replies 3 ·
Undergrad Can a Chessboard be Tiled with No Overlaps or Half Tiles?
- DaveC426913
- · Replies 4 ·
Undergrad How is this equality possible? What did the professor do to reach it?
- tahlaskerssen
- · Replies 4 ·
Undergrad Should I Pursue Math Education Through Academia or Self-Teaching?
- dijkarte
- · Replies 1 ·
High School Do I Need to Be Enrolled to Use MyMathLab?
- rightbackatyou
- · Replies 2 ·
In a triangle ABC, prove that 1<cosA+cosB+cosC< or equal to 3/2
- anemone
- · Replies 4 ·
Can x, y, and z be the side lengths of a triangle?
- anemone
- · Replies 8 ·
Graduate Establishing kT inequality from sandwich theorem with logarithmic bounds
- truewt
- · Replies 9 ·
Undergrad Very simple issue on Fourier series
- DWill
- · Replies 2 ·
Graduate Question on Definition of Fourier Transform
- nickmai123
- · Replies 1 ·
Graduate When to use mathematics and its operators ?
- Sabbatical
- · Replies 2 ·
High School Does Multiplying or Dividing by a Negative Number Change the Inequality Symbol?
- xeon123
- · Replies 3 ·
Graduate A quick and clever method for solving nonlinear systems of equations
- royzizzle
- · Replies 1 ·
Proving CosX CosY CosZ + SinX SinY SinZ ≤ 1
- anemone
- · Replies 7 ·
Undergrad Why Do People on a Hyperbola Hear a Sonic Boom Simultaneously?
- cjpul
- · Replies 2 ·
Find the exact value of the solution to the equation √ 2+(√ 2-(√ 2+√( 2-x))))=x.
- anemone
- · Replies 3 ·
Prove that (1+a/sinx)(1+b/cosx) is greater than or equal to (1+2sqrt(ab))^2
- anemone
- · Replies 2 ·
Which term should I use for the explicit formula of an arithmetic sequence?
- Casio1
- · Replies 7 ·
Proving cosA+cosB+cosC ≤ 3/2 with Jensen's Inequality
- anemone
- · Replies 2 ·
Undergrad Fibonacci spiral method giving 22/7 as pi approximation
- greggory
- · Replies 1 ·
Undergrad Ramsey's theorem: can infinite sets have both friendships and strangers?
- cragar
- · Replies 6 ·
Undergrad Why does x = 5/4 not satisfy sqrt(x+1)-sqrt(x-1)=sqrt(4x-1)?
- vkash
- · Replies 5 ·
Undergrad Determine Harmonic Relationships bw Set of Numbers
- Showtime83
- · Replies 1 ·
High School Negative times negative is positive?
- Bipolarity
- · Replies 6 ·
Undergrad Why does dividing by 1/0 give 0 instead of undefined?
- BrandonNajera
- · Replies 4 ·
High School Why do we subtract and not divide when solving for variables in algebra?
- Drakkith
- · Replies 6 ·
Undergrad Solving for h: V and tnα, d Given
- thomasJDN
- · Replies 6 ·
Undergrad Is There an Error in Morris Kline's Book?
- King
- · Replies 1 ·
Undergrad How can the sum of three cosines equal 1?
- Gunthi
- · Replies 2 ·
Undergrad Piecewise function radians and numbers ?
- fran1942
- · Replies 2 ·
High School Summation equation for odd numbers?
- aeonsky
- · Replies 8 ·
High School 4 digit number knowing one number
- annenap
- · Replies 2 ·
Undergrad What Are the Jewels in the Crown of Mathematics? Is There a Picture of Them?
- Jim Kata
- · Replies 3 ·
Undergrad Writing mathematical proofs has greatly improved my life
- Jamin2112
- · Replies 25 ·
High School Why negative times negative is positive
- gurudon
- · Replies 7 ·
Math using objects instead of numbers.
- stephenbosley
- · Replies 17 ·
High School Why does 6/2(1+2) give different answers on calculators vs Wolfram Alpha?
- trustnoone
- · Replies 3 ·
Undergrad How do you find the function that describes this sequence?
- Russelluke
- · Replies 9 ·
Undergrad 1-1/2+1/3-1/4-1/5 I solve and get 0. amazing. Where is it wrong?
- vkash
- · Replies 11 ·
Prime number and the coefficients of polynomial
- anemone
- · Replies 2 ·
Undergrad What is parameter regression in modeling?
- absurdist
- · Replies 3 ·
Simplify cos(a)cos(2a)cos(3a)...cos(999a) for a=2π/1999
- anemone
- · Replies 5 ·
High School Finding a formula for Joe's production rates with multiple outputs
- reenmachine
- · Replies 10 ·
Undergrad Functions: instead of plotting points, can you move planes?
- grisman
- · Replies 1 ·
Graduate Prove sqrt(xy/(z+xy))+sqrt(yz/(x+yz))+sqrt(xz/(y+xz))≤3/2
- JennyPA
- · Replies 19 ·
High School What is the mathematical term for an angle changing by 0?
- King
- · Replies 2 ·
Undergrad Do you have more biscuits or jars if you have infinitely many jars with two biscuits each?
- Rensom
- · Replies 24 ·
Undergrad Finding the intersection points of the two lines in space
- macaulay
- · Replies 3 ·
Undergrad Representing cos(npi/2) in general form
- nutcase21
- · Replies 2 ·
Undergrad Pigeonhole Principle and the Arithmetic Mean
- Dschumanji
- · Replies 1 ·
Graduate I just read somwhere thatif cos a = cos dthen a=2n(pi)±d where
- sparsh12
- · Replies 1 ·
Coefficient of friction and effects of
- Casio1
- · Replies 2 ·
Undergrad Help with reciprocal functions and sin(a+b) from test review
- Prents
- · Replies 1 ·
High School Why Is Binary Math Different from Decimal Math?
- MartinJH
- · Replies 11 ·
High School What are the main types of mathematics?
- Cinitiator
- · Replies 2 ·
High School What does this notation mean ?
- vineel49
- · Replies 4 ·
Undergrad Why Does the Inverse-Square Law Fail at Distances Less Than One Meter?
- TreeScience
- · Replies 2 ·
Coefficient of trinomial expansion
- anemone
- · Replies 10 ·
Graduate How to find type of conic section from its general equation?
- truongson243
- · Replies 3 ·
Undergrad What does it mean to solve a problem 'analytically'?
- autodidude
- · Replies 5 ·
Graduate How to generate an equation for estimating maximum error?
- PatternSeeker
- · Replies 14 ·
P-1 consecutive numbers coprime to n
- shmounal
- · Replies 1 ·
High School If an Atom was the size of a grain of salt
- Embison
- · Replies 12 ·
High School Calculating Duration of Class: T2 - T1/T1
- xeon123
- · Replies 1 ·
Graduate Vector difference metric that considers the variance of the components
- daviddoria
- · Replies 8 ·
Undergrad Modulus Application Problem I think
- Thundagere
- · Replies 7 ·
High School Will Mainland HS ever fix its algebra page?
- Stephen Tashi
- · Replies 13 ·
High School What does H represent in the graph of y = 2H(x - 4)?
- jaja1990
- · Replies 4 ·
Undergrad Island of truth-tellers and liars with Andrea, Barbara, Ciro
- Jjjxy
- · Replies 11 ·
Graduate Why are so many phenomena exponentially distibuted?
- Helicobacter
- · Replies 9 ·
Undergrad Possible Ratios for Integers Between 20 and 70
- bugatti79
- · Replies 5 ·