General Math Forum

Post thread
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
Graduate Angle between 2 vectors in a certain direction
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad Moving a 2D object to a 3D world
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Solve the "Hardest Logical Puzzle Ever
  • · Replies 11 ·
Replies
11
Views
5K
High School Mathematical terms adopted in general use
  • · Replies 6 ·
Replies
6
Views
2K
Graduate # of intersections for 2 curves on a plane
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Why Does the Hadamard Function Imply Imaginary Numbers?
  • · Replies 16 ·
Replies
16
Views
4K
High School Math Olympiad Resources: Free, Online Guides for High School
  • · Replies 2 ·
Replies
2
Views
3K
High School What is the next number in the sequence: 4, 6, 12, 27, 60, 138?
  • · Replies 20 ·
Replies
20
Views
5K
Undergrad Challenging problem corrrection no sine and no cosine law
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Find the speed of the aeroplane in km/hr
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Why is it empty and why is there only one empty set?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate George Gamow: Turning Double Apples into Doughnuts & Inverse Universes
  • · Replies 1 ·
Replies
1
Views
2K
High School Real World Example for Cosecant or Secant
  • · Replies 4 ·
Replies
4
Views
29K
Some friends want math help all the time
  • · Replies 12 ·
Replies
12
Views
2K
Graduate Can cosh(x)cosh(y) be rewritten in terms of k=Cosech(x)*Cosech(y)?
  • · Replies 3 ·
Replies
3
Views
3K
High School Radius x Height: Unpacking the Mystery of Volume in Cubes
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Another challenging question, no sine and no cosine law
  • · Replies 2 ·
Replies
2
Views
2K
High School Old Brain Teaser: 10 Men & 10 Holes
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Is the Problem Solvable Without Trigonometry?
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad Is there a solution for this isoceles triangle problem?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Graphical solution of cubic equations
  • · Replies 2 ·
Replies
2
Views
4K
Graduate What is the minimum admissible number in this set of statements?
  • · Replies 13 ·
Replies
13
Views
10K
Undergrad Calculating the phase of the sum of two vectors
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Derivation of Exponential Equation
  • · Replies 1 ·
Replies
1
Views
2K
High School Changing the subject of a formula
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How can I find the proof for the Poncelet-Steiner Theorem?
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad What are some recommended undergraduate texts in mathematics?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Colored hats, liars, and truth-tellers
  • · Replies 1 ·
Replies
1
Views
4K
High School Who Discovered the Trig Sum Formulas?
  • · Replies 4 ·
Replies
4
Views
2K
High School Find Phase Shift & # Squares to Move Trig Graphs
  • · Replies 1 ·
Replies
1
Views
3K
Can You Pronounce 'Lebesgue' Correctly?
  • · Replies 17 ·
Replies
17
Views
30K
Undergrad How Were the Sine and Cosine Formulas Originally Derived?
  • · Replies 5 ·
Replies
5
Views
3K
High School Distribute 24 points in a circle
  • · Replies 5 ·
Replies
5
Views
3K
High School Is the statement 0! = 1 actually wrong or just ill-defined?
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Number of Positive Divisors of an Integer: Proof
  • · Replies 2 ·
Replies
2
Views
3K
High School How does a TI-84 calculate the derivative at a point?
  • · Replies 3 ·
Replies
3
Views
8K
Graduate Several unknowns but only one equation
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How To Find The Formula of This Permutations?
  • · Replies 1 ·
Replies
1
Views
4K
High School Is Flex Klien's Prime Squares Birthday a Sign for Math Genius?
  • · Replies 5 ·
Replies
5
Views
2K
High School Coordinates of a random point of a circle?
  • · Replies 18 ·
Replies
18
Views
28K
Funny Math Proof - What Is It?
  • · Replies 1 ·
Replies
1
Views
2K
High School What Are These Three 2D Shapes Called?
  • · Replies 1 ·
Replies
1
Views
2K
High School Help Me Factorise: 3(n+r)(n+r-1) + (n+r) to (n+r)(3n+3r-2)
  • · Replies 3 ·
Replies
3
Views
3K
Advance calculus and more, courtesy Harvard
  • · Replies 3 ·
Replies
3
Views
6K
Undergrad Sum of a polygon's interior angles
  • · Replies 39 ·
2
Replies
39
Views
23K
High School Are 3 2 1 Consecutive Integers?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Does Principia Mathematica Live Up to Its Name?
  • · Replies 3 ·
Replies
3
Views
3K
Awesome I'm as smart as a high schooler
  • · Replies 8 ·
Replies
8
Views
2K
High School How do I rearrange an equation involving multiple variables and fractions?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad How do you know which field in maths is for you or not?
  • · Replies 4 ·
Replies
4
Views
2K
High School Discover the Difference Between 10% and 30% of 20000
  • · Replies 7 ·
Replies
7
Views
5K
Undergrad Calculate Cost for Most Economical Speed & Max Speed for Ship Voyage
  • · Replies 4 ·
Replies
4
Views
6K
Undergrad Hard time with trigonomic functions.
  • · Replies 9 ·
Replies
9
Views
12K
Graduate Protecting Your Scientific Work: How to Safeguard Your Ideas and Discoveries
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Deriving Equation for $\gamma_0$
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How many ways can we rearrange the letters in DISCRETE
  • · Replies 3 ·
Replies
3
Views
3K
High School What's the Difference between Algebra 1,2,and 3
  • · Replies 4 ·
Replies
4
Views
26K
Undergrad Infinite number of terms in the expansion (1+x)^n?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Solving a Thought Problem: Growing a Field of Crops from Scratch
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What Are the Best Mathematics Institutions to Visit in Canada?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Radian measures with Trig Functions?
  • · Replies 11 ·
Replies
11
Views
17K
Graduate Metamathematical Analysis of Physics Formulae
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Proving the Occurrence of Coinciding Clock Hands at Noon and Midnight
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad Are non-integer moduli useful in modular arithmetic?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad How to show that Acosx+Bsinx=Ccos(x+a) ?
  • · Replies 6 ·
Replies
6
Views
13K
Undergrad Understanding Spherical Trigonometry: What is it and How is it Used?
  • · Replies 2 ·
Replies
2
Views
3K
High School The period of trigonometric functions
  • · Replies 4 ·
Replies
4
Views
22K
High School What are the x and y intercepts y= x+2/x-7 rational
  • · Replies 7 ·
Replies
7
Views
2K
High School Building a dog house on the side of a shed.
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Math Exercises for Physics Students | Maiki
  • · Replies 9 ·
Replies
9
Views
3K
High School Function Notation: Understanding h(t) & t(h)
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad Intuition behind this algebraic question
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad How is the average value for a sinewave derived?
  • · Replies 24 ·
Replies
24
Views
7K
Undergrad Rockeet going from A to B with least fuel
  • · Replies 7 ·
Replies
7
Views
2K
High School Figuring out first day of a month
  • · Replies 5 ·
Replies
5
Views
2K
I Figured It Out to Solving Challenges
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Question about how to derive Sine
  • · Replies 8 ·
Replies
8
Views
9K
High School How Much Would a Trillion Dollars Weigh & Trees Used
  • · Replies 29 ·
Replies
29
Views
7K
Undergrad What is the Flaw in the 'Proof' That -1 Equals 1?
  • · Replies 3 ·
Replies
3
Views
2K
High School What is the point of synthetic division?
  • · Replies 8 ·
Replies
8
Views
5K
High School Finding integer solutions logically
  • · Replies 17 ·
Replies
17
Views
4K
Undergrad Can someone explain modulo with fractions?
  • · Replies 3 ·
Replies
3
Views
31K
Graduate Is the sum 1+2+3+4+... really equal to -1/12?
  • · Replies 16 ·
Replies
16
Views
6K
Undergrad What math level teaches turning data points into equations?
  • · Replies 9 ·
Replies
9
Views
6K
Undergrad Need help with AMATYC math problem
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Solving non-elementary functions
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Solving the Hat Color Problem: Infinite Prisoners, 2 Colors
  • · Replies 9 ·
Replies
9
Views
6K
Graduate Random: Any way to calculate Transcendental numbers using abacus?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Can a formula be used to modify data patterns from linear to wave-like?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is this possible? [Pythagorean theorem in 3D]
  • · Replies 13 ·
Replies
13
Views
15K
Undergrad Diff Eq vs Calc 3: Which is Harder?
  • · Replies 7 ·
Replies
7
Views
6K
Undergrad How do you find the moment of inertia of a polygon?
  • · Replies 4 ·
Replies
4
Views
5K
Undergrad Solution to Equation: Rearrange beta in terms of alpha
  • · Replies 2 ·
Replies
2
Views
2K
Did Verizon make a math mistake on my bill?
  • · Replies 16 ·
Replies
16
Views
7K
Undergrad The Chinese Remainder Theorem (the CRT)
  • · Replies 5 ·
Replies
5
Views
8K
High School Rearranging equation of a circle
  • · Replies 6 ·
Replies
6
Views
4K
Optimal Strategies for Studying Textbooks in Mathematics: Tips from a Scientist
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Highest number impossible to make with 6,9,20.
  • · Replies 9 ·
Replies
9
Views
6K
Undergrad How many numbers containing the digit 1.
  • · Replies 4 ·
Replies
4
Views
3K
  • Poll Poll
Undergrad Is analysis more intuitive than algebra?
  • · Replies 17 ·
Replies
17
Views
4K