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
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
8K
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
3K
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
32K
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
5K
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
5K
Undergrad Scalars, vectors, pseudo-scalars, pseudo-vectors
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Prove Summation Equation: (2^n-1)n for Any Integer n
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Can You Calculate Angles from Graph Coordinates and Slopes?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How Accurate Is a 14-Year-Old's Calculation of the Earth-Moon Barycentre?
  • · Replies 1 ·
Replies
1
Views
2K
Are There Hidden Video Courses in Math, Science, and Engineering?
  • · Replies 7 ·
Replies
7
Views
9K
Graduate Is My Idea for Proving Mathematical Induction Incorrect?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad How can Fourier division be used to divide large numbers without a calculator?
  • · Replies 7 ·
Replies
7
Views
29K
High School What is the role of 'd' in defining a plane's normal form?
  • · Replies 5 ·
Replies
5
Views
2K
High School Very basic precal question about cotangent and tangent
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Can a Closed Form for This Complex Difference Equation Be Determined?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Solving for x in Large Right Triangle
  • · Replies 8 ·
Replies
8
Views
3K
High School Time of completion (Times Tables)
  • · Replies 39 ·
2
Replies
39
Views
16K
Graduate E8 and Catastrophe Theory(Bifurcation) - help
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Optimum (min/max) of a symmetric function
  • · Replies 4 ·
Replies
4
Views
6K
Graduate How to Efficiently Triangulate a Concave Shape?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Seven digit base eight positive integer puzzle
  • · Replies 2 ·
Replies
2
Views
4K
High School How is the therefore -sign orientated?
  • · Replies 3 ·
Replies
3
Views
7K
High School Interactive math exersises web (www.emathematics.net) Fantastic
  • · Replies 1 ·
Replies
1
Views
11K
Happy PI Day 2009: Celebrate Math & Science Geeks!
  • · Replies 23 ·
Replies
23
Views
4K
Undergrad Definition of Strong and Weak form of a theorem
  • · Replies 4 ·
Replies
4
Views
13K
Undergrad Simplify quotient of trignometric functions
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad How many right triangles can you create with given coordinates?
  • · Replies 2 ·
Replies
2
Views
3K
High School What are the available video lectures for Calc I & II at NC State?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Equation of relation that has mulitple y points
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Number of solutions to summation
  • · Replies 3 ·
Replies
3
Views
3K
High School What is the fifth term in this arithmetic sequence?
  • · Replies 4 ·
Replies
4
Views
6K
High School Sine: Definition & Calculation
  • · Replies 10 ·
Replies
10
Views
8K
Undergrad Finding the Right Calculus Book for Self-Study
  • · Replies 8 ·
Replies
8
Views
5K
High School Need help rearranging an equation
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Solve for Four Numbers: Sum and Product = 711
  • · Replies 8 ·
Replies
8
Views
6K
I need to know what something's called in English
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Find q in F = qVe + (Pe - Pa) * Ae with this simple formula
  • · Replies 4 ·
Replies
4
Views
3K
High School Four Fours Puzzle: Get Each Integer with 4s
  • · Replies 14 ·
Replies
14
Views
20K
High School How to improve at Mathematics?
  • · Replies 9 ·
Replies
9
Views
11K
Undergrad How can we use Euclid's proof to find infinitely many primes?
  • · Replies 8 ·
Replies
8
Views
4K
High School Understanding the Complexities of Square Roots in Equations
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Flow Network Capacity Augmentation
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Can Pi minus e ever equal a rational number?
  • · Replies 23 ·
Replies
23
Views
4K
Get Over Failure: Strategies & Math Tips
  • · Replies 9 ·
Replies
9
Views
4K
High School Cool proof i found. seen it b4?
  • · Replies 13 ·
Replies
13
Views
3K
High School How to use formula x-y =m c squared
  • · Replies 29 ·
Replies
29
Views
8K
Undergrad How does the Fourier transform work and why is it important?
  • · Replies 8 ·
Replies
8
Views
2K
Looking for tabulated series expansions
  • · Replies 1 ·
Replies
1
Views
2K
High School Which Lockers Remain Open After Students Toggle Them?
  • · Replies 20 ·
Replies
20
Views
9K
Celebrate Square Root Day: 3/3/2009!
  • · Replies 15 ·
Replies
15
Views
4K
Undergrad Efficiently Computing a Special Sum in Excel without Macros
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Finding quadratic irrationals from their decimal form
  • · Replies 7 ·
Replies
7
Views
4K
High School Understanding Modulus and Absolute Values: Explanation and Examples
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad A question about Transcendental numbers
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Decimal and nondecimal almost perfect squares of the form aaabbb
  • · Replies 1 ·
Replies
1
Views
4K
High School Understanding Half-Spaces in Typography
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can 2-Index Recurrence Relations with Constant Coefficients Be Solved Generally?
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Understanding the Notation of \(\nabla \prod\)
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Finding Equations for Circular Irrigation System
  • · Replies 2 ·
Replies
2
Views
2K
Is 73+47 Really Equal to 5? The Answer May Surprise You!
  • · Replies 22 ·
Replies
22
Views
4K
Wat is the exciting topic in math to learn?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Bokmal or Nynorsk in Norwegian mathematical writings.
  • · Replies 6 ·
Replies
6
Views
4K
Graduate What is the Exponential Inverse for Identity Element 1?
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Practicality of pure math branches
  • · Replies 6 ·
Replies
6
Views
4K
High School Drawing Karnaugh Maps Using Venn Diagrams
  • · Replies 1 ·
Replies
1
Views
3K
High School How Old is Jack in the Jak and Jill Maths Problem?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Average dis btwn two points in unit circle
  • · Replies 12 ·
Replies
12
Views
14K
Graduate Finding Summation of n^p with Bernoulli Numbers
  • · Replies 1 ·
Replies
1
Views
2K
Can You Solve These 2 Missing Number Riddles?
  • · Replies 19 ·
Replies
19
Views
9K
Undergrad Graphing Non-f(x) Functions on TI-89 Calculator
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Shortest time in which P catches Q
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Is nlogn the Same as n Multiplied by logn?
  • · Replies 1 ·
Replies
1
Views
2K
High School Next number in a sequence of randomly chosen numbers?
  • · Replies 12 ·
Replies
12
Views
6K
Undergrad Consecutive and minimum pair puzzle
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad What are the differences between popular Calculus books?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Ten prime numbers describing an arithmetic sequence
  • · Replies 8 ·
Replies
8
Views
5K