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
Is R(P+Q) for This Polynomial Problem 15?
  • · Replies 10 ·
Replies
10
Views
3K
Is an Infinite Sum of Rational Numbers Always Rational?
  • · Replies 7 ·
Replies
7
Views
9K
Natural Logarithm of Negative Numbers
  • · Replies 5 ·
Replies
5
Views
23K
Can Symmetry Help Us Solve Simultaneous Equations with Different Variables?
  • · Replies 8 ·
Replies
8
Views
4K
Why Is a Taylor Series More Accurate Near Its Expansion Point?
  • · Replies 1 ·
Replies
1
Views
3K
How Can I Write an Absolute Value Function for the Outline of the Khufu Pyramid?
  • · Replies 6 ·
Replies
6
Views
3K
Binary numbers (fundamental) question
  • · Replies 1 ·
Replies
1
Views
4K
Why no foundations of maths in Mellienium problems?
  • · Replies 5 ·
Replies
5
Views
3K
How can I determine the contour lines for temperature readings on a map?
  • · Replies 9 ·
Replies
9
Views
4K
Can a Math Training Software Improve Your Mathematical Skills?
  • · Replies 9 ·
Replies
9
Views
8K
How supposed I imagine the following equations?
  • · Replies 1 ·
Replies
1
Views
2K
How to Calculate Engraving Costs for Pewter Mugs: An Engraving Promotion Guide
  • · Replies 11 ·
Replies
11
Views
7K
Question about some terminology
  • · Replies 3 ·
Replies
3
Views
2K
Proving \int curl A.n dS = 0 w/ Stokes Theorem
  • · Replies 22 ·
Replies
22
Views
12K
How to Find the Power Series and Radius of Convergence for Arctan'x
  • · Replies 7 ·
Replies
7
Views
43K
Solving Trigonometry Problem: 2 Variables, 2 Equations
  • · Replies 7 ·
Replies
7
Views
3K
Area Of The Surface Of Revolution
  • · Replies 10 ·
Replies
10
Views
4K
Proving x*delta' ~ -delta with Generalized Functions
  • · Replies 11 ·
Replies
11
Views
3K
A Mathematician's Apology. great read
  • · Replies 3 ·
Replies
3
Views
4K
Can't find a particular example: two numbers very close together
  • · Replies 13 ·
Replies
13
Views
4K
Is there a free graph plotting software for maths functions?
  • · Replies 3 ·
Replies
3
Views
2K
Math software that allows for working in different counting schemes?
  • · Replies 3 ·
Replies
3
Views
2K
What is the difference between SIN and SINH?
  • · Replies 6 ·
Replies
6
Views
50K
Understanding the Basics of Complex Numbers
  • · Replies 10 ·
Replies
10
Views
3K
Question: What is the average of seven rolls of 3d8 in a PnP RPG?
  • · Replies 18 ·
Replies
18
Views
5K
How to Find the 't' Value in Integral Calculus?
  • · Replies 4 ·
Replies
4
Views
3K
Approximation of a Circle's Circumference
  • · Replies 3 ·
Replies
3
Views
7K
The fly and train math problem
  • · Replies 8 ·
Replies
8
Views
12K
Numerical calculation about curve length
  • · Replies 5 ·
Replies
5
Views
9K
Number of replies for most recent post in PF
  • · Replies 2 ·
Replies
2
Views
2K
Solve the following equation x^2 – x < 0
  • · Replies 2 ·
Replies
2
Views
3K
Samples of parametric equations
  • · Replies 2 ·
Replies
2
Views
2K
What is undergraduate math like beyond the calculus sequence?
  • · Replies 6 ·
Replies
6
Views
8K
Angle between vectors that are both off set by a third vector
  • · Replies 3 ·
Replies
3
Views
4K
3 Questions on Inverse, Reciprocal, and Trigonometric Integration
  • · Replies 2 ·
Replies
2
Views
2K
Units Digit of n: Is it Greater than 4?
  • · Replies 15 ·
Replies
15
Views
4K
Math Practice Ideas for Aspiring Physics Students?
  • · Replies 3 ·
Replies
3
Views
2K
Gaining Geometry Knowledge to Books for the New Learner
  • · Replies 4 ·
Replies
4
Views
4K
What is the significance of \hat{\theta} in polar vector coordinates?
  • · Replies 4 ·
Replies
4
Views
6K
Finding Square & Cube Roots by Hand
  • · Replies 3 ·
Replies
3
Views
2K
Time scaing in discrete time variable?
  • · Replies 1 ·
Replies
1
Views
2K
Can Infinity Minus X Ever Be Larger?
  • · Replies 4 ·
Replies
4
Views
10K
Criminal offences in maths textbooks
  • · Replies 38 ·
2
Replies
38
Views
8K
Radian and Degree with Graphing Calculator
  • · Replies 5 ·
Replies
5
Views
42K
What is the difference between norm and modulus?
  • · Replies 6 ·
Replies
6
Views
25K
Solve Inequality: x - 1 = 1 - x | Tom Thanks
  • · Replies 13 ·
Replies
13
Views
3K
Can We Define the Undefined Concepts of Zero and Infinity?
  • · Replies 14 ·
Replies
14
Views
11K
Having toruble remembering series and sequences in algebra
  • · Replies 7 ·
Replies
7
Views
8K
Number 9 multiplication tricks
  • · Replies 10 ·
Replies
10
Views
4K
How can the centroid and triangle angles help prove equilateral triangles?
  • · Replies 12 ·
Replies
12
Views
6K
Trigonometry sin and cos question
  • · Replies 3 ·
Replies
3
Views
3K
Classifying 3D Shapes into Finite Categories
  • · Replies 2 ·
Replies
2
Views
4K
Calculate the average speed in km/h of earth assuming a circular path
  • · Replies 7 ·
Replies
7
Views
5K
What Is Infinity? Explained for Beginners
  • · Replies 33 ·
2
Replies
33
Views
6K
Is the Modulus Function One or Two Functions?
  • · Replies 3 ·
Replies
3
Views
6K
Cracking Passwords: Calculating Outcomes with 3 Characters
  • · Replies 5 ·
Replies
5
Views
3K
Calculating Odds of Coin Toss: Accurate?
  • · Replies 2 ·
Replies
2
Views
15K
Calc Quadratic Bezier Curve Length
  • · Replies 2 ·
Replies
2
Views
5K
Are There Closed Form Versions for Cubic Polynomials with 3 or 4 Points?
  • · Replies 5 ·
Replies
5
Views
4K
How Can Trigonometry Be Used to Find Distances in Perspective?
  • · Replies 5 ·
Replies
5
Views
3K
What is the Dedekind section definition of a lower bound?
  • · Replies 5 ·
Replies
5
Views
9K
How Can You Effectively Tackle Challenging Math Problems?
  • · Replies 2 ·
Replies
2
Views
2K
Goemetric Algebra Vs Algebraic Geometry.
  • · Replies 10 ·
Replies
10
Views
11K
Is x²-y²+3xy-x⁴+5y⁴+z⁴-2t⁴+3xyzt-6x²tz+5x²y² a 4-Linear Form?
  • · Replies 1 ·
Replies
1
Views
2K
Interest based investment strategy
  • · Replies 2 ·
Replies
2
Views
2K
Compounding Interest Formulas for Varying Annual Deposits and Interest Rates
  • · Replies 3 ·
Replies
3
Views
3K
Showing Collinearity: Methods & Geometric Shapes
  • · Replies 2 ·
Replies
2
Views
3K
Where can I learn Quick math - Help
  • · Replies 13 ·
Replies
13
Views
4K
Quick question about cardinals
  • · Replies 3 ·
Replies
3
Views
2K
What is the role of Dedekind cuts in defining the real numbers?
  • · Replies 1 ·
Replies
1
Views
7K
Question concerning probablity
  • · Replies 7 ·
Replies
7
Views
3K
Permutation Problem: Arrange "PARALLEL" w/ 2 "L"s Together
  • · Replies 10 ·
Replies
10
Views
9K
Integration Problem with Inconsistent Results
  • · Replies 16 ·
Replies
16
Views
4K
Is every subspace of a connected space connected?
  • · Replies 12 ·
Replies
12
Views
14K
Is f(x) = x^2 on [-5,10] an even function?
  • · Replies 3 ·
Replies
3
Views
3K
Conjecture Connecting All Branches of Math
  • · Replies 4 ·
Replies
4
Views
3K
Sketch of curves defined by parameters
  • · Replies 3 ·
Replies
3
Views
3K
Proving Circle Has Smallest Perimeter for Same Area
  • · Replies 1 ·
Replies
1
Views
4K
An set without limit points - Necessarily closed?
  • · Replies 15 ·
Replies
15
Views
17K
Does dividing a function by a smooth function result in a smooth function?
  • · Replies 1 ·
Replies
1
Views
2K
How to Choose the Right CRC for High Confidence Error Detection?
  • · Replies 1 ·
Replies
1
Views
3K
Deriving the Surface Area of Sphere
  • · Replies 7 ·
Replies
7
Views
28K
Using Trig Identities to Simplify Sin(Kx)sin(2Kx)
  • · Replies 2 ·
Replies
2
Views
2K
Differentiability and continuity confusion
  • · Replies 19 ·
Replies
19
Views
7K
Weird relation: its graph is the formula
  • · Replies 23 ·
Replies
23
Views
10K
Understanding Music Theory: Guitar & Piano
  • · Replies 23 ·
Replies
23
Views
5K
Solving First-Year Physics Textbook Puzzle: Adding Squared Equations
  • · Replies 5 ·
Replies
5
Views
4K
What is the solution to this heavy integral?
  • · Replies 3 ·
Replies
3
Views
2K
Logarithmic Series Expansion Using Taylor's/McLaurin's
  • · Replies 12 ·
Replies
12
Views
46K
Representations of SU(2) are equivalent to their duals
  • · Replies 4 ·
Replies
4
Views
3K
Solving the Unsolved: Egyptian Fractions
  • · Replies 1 ·
Replies
1
Views
4K
Solving Rational Functions: Rewriting Equation to Get R(z)=...
  • · Replies 4 ·
Replies
4
Views
5K
Which Problem Book for 16-Year-Old Self-Taught Maths Student?
  • · Replies 2 ·
Replies
2
Views
2K
Relationship of Y^2=f(x) and Y=f(x)
  • · Replies 9 ·
Replies
9
Views
12K
How can I find the maximum value of a function on a specific interval?
  • · Replies 2 ·
Replies
2
Views
5K
How to Find the Equation for a Quadratic with a Root of 1 + 3i?
  • · Replies 2 ·
Replies
2
Views
3K
Integration Series: Investigating a Puzzling Relation
  • · Replies 13 ·
Replies
13
Views
3K
Explaining SO(3) and U(2) Lie Group Relationships to Non-Experts
  • · Replies 7 ·
Replies
7
Views
4K
Why can horizontal asymptotes be crossed?
  • · Replies 8 ·
Replies
8
Views
73K
How to Convert Between Julian Day and Gregorian Date?
  • · Replies 1 ·
Replies
1
Views
3K