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Mathematics
General Math Forum
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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
Sep 4, 2025
Math Guides, Tutorials and Articles
MHB
Deriving the first and second order Newton-Cotes formulas
Aug 30, 2022
MHB Math Problem of the Week
POTW
Sum of an Alternating Series
Mar 28, 2025
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Intersection of a line and a plane, for what value(s) of k ?
Aug 16, 2005
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4
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5K
Expansion for Tan x about Pi/2
Aug 16, 2005
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8
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16K
But how accurate is my regression function?
Aug 16, 2005
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2
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2K
How do I express the volume of a set in terms of length, width, and height?
Aug 15, 2005
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2
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5K
What is the effect of step functions on slope changes?
Aug 15, 2005
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9
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9K
Can the Definition of Derivative be Extended to Functions from R^n to R^m?
Aug 15, 2005
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5K
Why is 'u' gone in equation 1?
Aug 15, 2005
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4
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3K
Why Does ln(x!) Approximate to x ln(x) - x?
Aug 15, 2005
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15
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3K
Why must every homogeneous system of planes have at least 1 intersection point
Aug 14, 2005
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1
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2K
Surface Area of an N-Dimensional Sphere
Aug 14, 2005
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9
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7K
Quiz question: Can you solve this natural number sum problem?
Aug 13, 2005
Replies
10
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3K
Sketching a simple plane in R3 (should be easy, but not for me :P)
Aug 13, 2005
Replies
4
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8K
Adding X as an Instrument Variable in GMM Estimation
Aug 13, 2005
Replies
8
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6K
Hints for Solving a System of Nonlinear Trigonometric Equations
Aug 12, 2005
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4
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4K
Trigonometry slope problem .
Aug 12, 2005
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3
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5K
Advanced Multivariable Calculus Textbooks: What Are Your Recommendations?
Aug 11, 2005
Replies
14
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8K
What is the meaning of the term 'surface term'?
Aug 11, 2005
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11
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9K
Proving 5^n-4n+15 Divisible by 16
Aug 10, 2005
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8
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6K
Can a 'Good Surface' Be Found for Any Continuous Vector Field?
Aug 10, 2005
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2
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3K
A question of roots of riemann function
Aug 9, 2005
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4
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2K
What is the Difference Between D and E in Scientific Notation?
Aug 8, 2005
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2
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3K
Problem with roots of a function h(x)
Aug 8, 2005
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15
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3K
What is coordinate system and how to find angles b/w lines
Aug 8, 2005
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2
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5K
How can I solve a 3D coordinate problem involving rotation and a given point?
Aug 8, 2005
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1
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2K
Proving the Sum of an Arithmetic Series Formula
Aug 7, 2005
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5
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4K
How does multiplying infinity by 0 result in -1?
Aug 7, 2005
Replies
13
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3K
$5,000 daily compounding certificate of deposit
Aug 7, 2005
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3
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2K
Is there a solution using the Box Principle for a chessmaster's game schedule?
Aug 7, 2005
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9
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4K
Finding Inverse of Matrix & Solving AB=C: Urgent Help Needed
Aug 7, 2005
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2K
Solve Tangent Equation: Find A, B, & C for Ellipse
Aug 6, 2005
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5
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2K
Prove by Beta and Sigma limit definition
Aug 6, 2005
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5K
Mean Value Theorem: Proving Inequalities with f'(x)
Aug 5, 2005
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4
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3K
Rearranging Equation: Where is My Mistake?
Aug 5, 2005
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3
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3K
Solving Inequalities: 0<(2x+1)(x-2) or 0>(2x+1)(x-2)?
Aug 5, 2005
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3
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3K
Importance of Complex Analysis
Aug 4, 2005
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25
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21K
124x54+39+md=? hint md is roman numerals
Aug 4, 2005
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1
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2K
Weierstrass approach to analysis
Aug 4, 2005
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15
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4K
Explaining topology to non-mathematicians
Aug 4, 2005
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44
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12K
Why Do Simple Math Problems Sometimes Feel So Difficult?
Aug 4, 2005
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4
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2K
Calculating Travel Time to Alpha Centauri
Aug 3, 2005
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5
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4K
Solving a Trigonometric Equation: Primary to Secondary Solutions
Aug 3, 2005
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8
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3K
Rotate Nodes Around x & z-Axis: Second Opinion Needed
Aug 3, 2005
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1
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2K
How Many Roots Exist for Complex Numbers Raised to Irrational Powers?
Aug 3, 2005
Replies
2
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2K
Solving Math Problems: Selecting 7 Out of 16 Seated Men on a Round Table
Aug 2, 2005
Replies
10
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3K
Is A Always Equal to B? Understanding Equality in Math
Aug 2, 2005
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1
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2K
Trig chart for the complex plane
Aug 2, 2005
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22
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4K
How Does the Mathematical Function of Time Affect River Depth?
Aug 2, 2005
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3
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2K
If: 1^x=1^y and as: 1^2=1^99 then: 1=99
Aug 1, 2005
Replies
6
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3K
Basic Probability: Questions & Clarification
Jul 31, 2005
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17
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8K
How Do I Calculate the Area of a Sector with Different Lengths?
Jul 31, 2005
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1
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4K
Another relationship of variables
Jul 31, 2005
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2
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2K
Finding a Solution to a Vexing Problem
Jul 30, 2005
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2
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5K
Is the Hamiltonian Cycle an NP Problem?
Jul 30, 2005
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5
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2K
Limit of (x e^x) / (x^x *x^1/2)
Jul 30, 2005
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8
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2K
What's Next After Math Courses? - Advice for Hessam
Jul 30, 2005
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1
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2K
Spline what is a b spline what is rational b spline
Jul 29, 2005
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3
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2K
Inv, co, arc, arcco, inv co, etc
Jul 28, 2005
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4
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2K
How Does the Ford-Fulkerson Algorithm Determine Maximum Flow in a Network?
Jul 27, 2005
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1
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2K
The Ratio of Velocities at Perigee and Apogee Proof
Jul 27, 2005
Replies
1
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11K
Need HELP getting started with octave.
Jul 26, 2005
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3
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7K
What is the Relationship Between Money and Time in this Novel Concept?
Jul 26, 2005
Replies
7
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2K
Help Needed: Solving a Stat Question with No Breaks
Jul 26, 2005
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29
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4K
Prove that psquared +qsquared +rsquared +2pqr =1
Jul 26, 2005
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17
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3K
How to Find the Numbers M and N in This AS Math Example?
Jul 26, 2005
Replies
4
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2K
Finding the Spanning Tree of a Graph - Barneygumble742
Jul 26, 2005
Replies
2
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2K
EASY Q (Multiplying sign rules)
Jul 25, 2005
Replies
5
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6K
Learning vectors: the dot product of vectors
Jul 25, 2005
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5
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8K
Prove: (tan y + Cot y) sin y cos y = 1
Jul 25, 2005
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3
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2K
Why is the Multiplicative Identity Positive and Not Negative?
Jul 25, 2005
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32
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6K
Is an N-Sphere Just a Solid Ball or Something More?
Jul 25, 2005
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10
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3K
Geometric Problems: Can You Help Me Find Solutions?
Jul 24, 2005
Replies
7
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3K
Can You Order Quadratic Sums with Natural Numbers and Rational Coefficients?
Jul 23, 2005
Replies
4
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2K
How can I solve this 3D trigonometry question involving a river and a post?
Jul 23, 2005
Replies
2
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14K
Rotating a Vector in a Coordinate System: Explaining the Formula
Jul 22, 2005
Replies
5
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3K
How do you pronounce the name Xenocrates
Jul 22, 2005
Replies
15
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3K
What is the significance of Gann's Square of Nine in market analysis?
Jul 21, 2005
Replies
9
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10K
What Is the Algebraic Definition of the Mirrored Tree in Hofstadter's Puzzle?
Jul 21, 2005
Replies
10
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10K
Calculate Radius of Rolling Paper Cup
Jul 20, 2005
Replies
7
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5K
Optimizing Antifreeze Mixture: How Much Water to Add?
Jul 20, 2005
Replies
5
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2K
Factorial Sequences: Real Life Examples
Jul 19, 2005
Replies
22
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11K
Discuss, prove or disprove: winners & losers in oil production
Jul 19, 2005
Replies
2
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2K
Discuss, prove or disprove: winners & losers in oil production
Jul 19, 2005
Replies
2
Views
2K
Why Doesn't My 2-Sphere Graph Correctly in GraphCalc?
Jul 18, 2005
Replies
1
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2K
Why is (algebraic) topology important?
Jul 18, 2005
Replies
3
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9K
How do I find the delta Z of the at the midpoint of the plane?
Jul 18, 2005
Replies
12
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7K
What is the Connection between Logarithmic Tables and ln/e?
Jul 18, 2005
Replies
4
Views
6K
Find the Area of a Rectangular Plane with 3 Sequential Tips
Jul 17, 2005
Replies
11
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2K
How do I do long division again?
Jul 17, 2005
Replies
8
Views
16K
List all Rationals in [a,b]: a + lim x->0 x{n}_0^(floor((b-a)/x))
Jul 16, 2005
Replies
42
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7K
Solving the Paradox of A & B's Money Game
Jul 16, 2005
Replies
15
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3K
Half the posts over here are trying 2 prove that 1=2 or 0=-1 or
Jul 15, 2005
Replies
5
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2K
How Much Should You Pay for the Secret of Infinite Wealth?
Jul 15, 2005
Replies
3
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3K
Calculation of simultaneous equations
Jul 14, 2005
Replies
13
Views
3K
Proving 1 = -1: Help and Discussion
Jul 13, 2005
Replies
6
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2K
Is There a Bijection Between a Set and Its Power Set?
Jul 13, 2005
Replies
1
Views
5K
What are the key differences between affine and vector spaces?
Jul 13, 2005
Replies
3
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10K
Finding Slopes of Warped Plane: A,B,C,D,X
Jul 13, 2005
Replies
3
Views
8K
Solve Word Problem: Find Rectangle Dimensions from Circular Piece of Sheet Metal
Jul 13, 2005
Replies
8
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3K
Periodic Functions: Is There a Non-Trig Function?
Jul 13, 2005
Replies
9
Views
7K
Is zero times infinity equal to negative one?
Jul 13, 2005
Replies
6
Views
6K
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