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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.

Math Proof Training and Practice

A gap in resources that should help students visualise mathematics

Math Guides, Tutorials and Articles

MHB Deriving the first and second order Newton-Cotes formulas

Math Problem of the Week

Undergrad Sum of an Alternating Series
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MHB Problem-Solving Strategy for Dynamics Problems
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2
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33K
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High School List of Online Calculators for Math, Physics, Earth and Other Curiosities
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0
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11K
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What Topics Do These Math FAQs Cover?
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6
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14K
Insights What Exactly is Dirac’s Delta Function? - Insight
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2
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33
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Undergrad Erroneously finding discrepancy in transpose rule
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11
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750
Undergrad Trigonometry problem of interest
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3
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81
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5K
High School More similar triangle problems
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23
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1K
Undergrad Significant figures for inherently bound values
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6
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368
Undergrad Polynomial vs. Exponential time
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2
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551
Undergrad There are only finitely many primes
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7
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930
Undergrad Midpoint(s) of the unbounded number line
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15
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563
High School Arithmetic and our place value system
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6
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477
Unit Circle Double Angle Derivations
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6
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743
High School Can Six Pencils Be Arranged to Each Touch the Other Five?
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2
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30
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2K
Undergrad Video on imaginary numbers and some queries
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3
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2K
High School Imaginary Pythagoras
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13
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792
Undergrad Non-orthogonal bases
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12
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832
Insights Fermat's Last Theorem
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4
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105
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7K
High School An exact Paraxial equation derivation, 100% Cartesian
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6
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2K
Undergrad Useless continued fraction for 1
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6
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595
Undergrad Proving Newton's forward difference interpolation formula
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1
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597
Undergrad Geometry problem of interest with a 3-4-5 triangle
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2
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59
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High School What could prove this wrong? I'm having a dispute with friends
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4
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94
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4K
Undergrad Software for entering Mathematics Equations
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5
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528
Undergrad Am I misapplying something here? (Exponentials; Euler's identity)
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3
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488
High School Videos of 4D Die and Sphere
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3
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1K
High School Is this the right set mapping notation for a limit in two variables?
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8
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1K
Insights Fixing Things Which Can Go Wrong With Complex Numbers
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7
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4K
Graduate Is this Recursive Pattern in the Collatz Sequence Known?
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3
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638
Undergrad Why fixed point iteration of ##x^3 = 1-x^2## doesn't converge when ##x_0= 0##
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16
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917
High School How does the Riemann Hypothesis/Riemann Zeta function even work?
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17
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1K
Graduate Question about intersection of coordinate rings
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1
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926
High School Excel: converting a 3-ish week count into a monthly count
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15
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2K
High School Geometry Puzzle with 20 points in a cross pattern
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2
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31
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3K
High School Death Rally: an intricate probability problem?
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8
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2K
High School Solving equations but getting an identity - what mistakes were made?
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4
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1K
High School About a definition: What is the number of terms of a polynomial P(x)?
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2
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48
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3K
Graduate Leibniz Rule Videos on Digital-University
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1K
Undergrad Solving a system of equations with 5 unknowns
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10
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1K
High School "Land capture" graph paper game
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13
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1K
High School In a triangle, is the angle between the points of contact of the inscribed circle with the sides 120 degrees?
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2
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1K
High School How do you multiply fractions again? My brain just froze 😅
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2
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1K
Undergrad How to convince someone that an event repeating an infinite number of times does not guarantee every outcome?
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23
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2K
Undergrad Can Angular Velocity Accurately Control Ragdoll Limbs in Game Physics?
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6
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3K
Undergrad ##x\lt y \lt z## positive integer numbers and if ##\dfrac 1x+\dfrac 1y+\dfrac 1z=\dfrac 13##
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6
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2K
High School How Many Straight Lines to Connect an N by M Array of Points in a Closed Loop?
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25
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3K
High School The Pitcher's Mound
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10
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High School Is It Better to Run or Walk in the Rain?
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2
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Undergrad (0,1) is uncountable using binary expansions?
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15
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Undergrad How were "e" and "pi" found?
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26
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Undergrad How was this substitution possible?
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5
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Graduate Challenging integral involving exponentials and logarithms
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14
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3K
High School Are there English names for these formulas? (binomial formulas)
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2
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42
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5K
High School 1lb cube of 99% pure copper?
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10
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2K
Undergrad Proof of a fact about real numbers - transcendental and algebraic
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7
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2K
High School Which conditions should I check to see if a quadrilateral is a square?
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17
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2K
Undergrad Finding the Largest (or smallest) Value of a Function - given some constant symmetric errors
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3
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2K
High School How is it that law of sines does not work in this exercise?
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3
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70
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Graduate Expansion with respect to ##z_1##
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1
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High School How to prove this for every Arithmetic Progression?
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12
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High School Mass estimate only through mass rate of change
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4
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High School Modelling object w/ functions, how to find volume loss from indents?
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9
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High School Given an equation, find the value of this expression
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17
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Undergrad How to see that cos(z) is unbounded, but cos(xy)+isin(xy) is bounded?
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High School Understanding the Pythagorean Theorem
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38
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Insights Why Vector Spaces Explain The World: A Historical Perspective
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Undergrad Billard balls on table
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10
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Undergrad How is the Euclid Math Contest marked?
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2
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High School Estimating ##\pi## with darts
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15
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High School Probability of future event as predicted by laws of nature
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5
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Undergrad Exploring Interesting Mathematical Puzzles
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2
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Undergrad Can I add any number of zeros to 0.00 ... 1?
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Undergrad Calculating the odds of drawing 3 "no" notes from a hat with 3 "no" and 3 "yes" notes
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3
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2K
High School Sine Multiplication
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5
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MHB (Seemingly) Random Sequences
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7
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2K
Undergrad Open problems in continued fractions
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6
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3K
Exploring Unconventional Addition: Can Mathematics Embrace New Foundations?
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8
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High School Is this a new theorem?
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9
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Undergrad Fermat point for quadrilaterals
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7
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2K
Undergrad ABC triangle with integer sides
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17
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2K
Graduate Fourier series approximation of a discontinuous eddy function
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1
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High School "Half of normal distribution"
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9
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High School Confused about ciphers in the book 'Arithmetic for the Practical Man'
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13
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Graduate Possible number of chess games
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20
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High School Nonsense can be truth in logic?
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3
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84
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Undergrad Change of variables clarification
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5
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High School Question about PEMDAS/BODMAS ambiguity
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3
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77
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High School Need an on-line calculator for a simple calculation
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12
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High School The mathematics of transforming images in Adobe Premiere - Part 1
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2
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High School When are two vectors collinear and coplanar?
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10
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Undergrad Transforming coordinates between Cartesian and spherical
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Solving simultaneous equations
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5
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Undergrad Can anyone solve this age problem?
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2
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33
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High School Fractional/decimal powers
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10
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Undergrad My attempt to understand horizontal transformations of functions
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6
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2K
Undergrad Relation between a circle and line in complex plane
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16
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2K
Graduate Integral Points of an Elliptic Curve over a Cyclotomic Tower
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5
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Undergrad Proving that fractions are the same as division
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2
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2K
Graduate Proving Goldbach's conjecture by induction (or why it doesn't seem to work)
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10
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3K
High School A simple trigonometry problem: Put eight coins around a central coin
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2
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37
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High School Tips on developing and improving number sense and basic math skills
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13
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High School I had a question about a way to write Euler's identity
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10
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Undergrad Evaluation of the sum 1^m+3^m+5^m+ ....................(2n+1)^{m}
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1
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2K