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
High School Can These Videos Help You Master Algebra, Trigonometry, and Calculus?
  • · Replies 2 ·
Replies
2
Views
10K
Undergrad Is Your Point Inside a Non-Regular Tetrahedron?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Convex Polyhedron: half-planes to triangular mesh
  • · Replies 2 ·
Replies
2
Views
2K
High School Calculator with LOTS of decimals
  • · Replies 5 ·
Replies
5
Views
6K
Undergrad How to Solve the Equation [(√2) +1]²¹ = [(√2)-1]*[3+2(√2)]˟ˉ¹ for x?
  • · Replies 11 ·
Replies
11
Views
2K
High School 1/3 cannot be expressed in decimal form?
  • · Replies 24 ·
Replies
24
Views
16K
Undergrad Smalles Number of Rectangles to make a perfect square?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate What kind of math test do you like best?
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Check my math for rolling friction please
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Discover Your Personality Type: Take the Quiz!
  • · Replies 2 ·
Replies
2
Views
4K
Exams Napster (in maths & science).
  • · Replies 5 ·
Replies
5
Views
12K
High School Real World Trig Problem - Thanks in Advance
  • · Replies 18 ·
Replies
18
Views
4K
High School Difference between an Equation and an Identity?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Discovering a Moving Orbit Algorithm
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Finding an interception point?
  • · Replies 7 ·
Replies
7
Views
5K
Undergrad Deriving Shapes from Equations - Visual Representation
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Radius of Smallest Circle in 6 Circles Problem (10cm)
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Sudokube: Does it Have More Than One Solution?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Optimizing Inequality with Constraints
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Thanks,JimCalculating forces between stars in 3D space
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad How to Find the Mth Digit of 2^n?
  • · Replies 10 ·
Replies
10
Views
3K
High School M :)Dividing by 7: A Pattern Revealed
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad Is i Rational or Irrational? Decoding the Nature of Imaginary Numbers
  • · Replies 15 ·
Replies
15
Views
20K
Graduate Proof of the Riemann Hypothesis
  • · Replies 15 ·
Replies
15
Views
7K
Undergrad What is the Mystery Number Sequence?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Something that I've never been taught
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Odd and Even Functions: The Mystery of Their Division
  • · Replies 3 ·
Replies
3
Views
6K
Undergrad What is the Sum of Digits for 2^1000?
  • · Replies 4 ·
Replies
4
Views
7K
Graduate Prove: Angle DAB Bisector when Given Parallelogram ABCD, Cyc. Quadrilateral BCED
  • · Replies 1 ·
Replies
1
Views
2K
Numb3rs: A Missed Opportunity for Mathematical Accuracy
  • · Replies 120 ·
5
Replies
120
Views
14K
Unlock Your Brain's Potential with Speed Mathematics Techniques
  • · Replies 8 ·
Replies
8
Views
5K
High School What does the equation xy=k represent?
  • · Replies 5 ·
Replies
5
Views
17K
High School Is this question ambiguously worded?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad MIT Math for Engineers: Gilbert Strang Course
  • · Replies 2 ·
Replies
2
Views
13K
High School How Many Right Angles Do Clock Hands Form in 12 Hours?
  • · Replies 30 ·
2
Replies
30
Views
5K
Undergrad What is the Average Speed Paradox?
  • · Replies 4 ·
Replies
4
Views
6K
High School How important do you value mental calculations
  • · Replies 21 ·
Replies
21
Views
4K
High School Understanding Modulus: Positive, Negative, and the Result
  • · Replies 5 ·
Replies
5
Views
10K
Undergrad Next number: 61, 115, 771, 4129, 15649, ?
  • · Replies 3 ·
Replies
3
Views
2K
High School Understanding Algebraic Variables with a Dash: Help with Math Term Explanation
  • · Replies 6 ·
Replies
6
Views
3K
High School How Do I Calculate Tax and Service Costs from a Total Price in Algebra?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Solving (a)to the power x = -infinity: Discover the value of x
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad Is there a flaw in my calculation that proves 1 equals -1?
  • · Replies 22 ·
Replies
22
Views
4K
Graduate Discussion of 'Valid method of proof'.
  • · Replies 54 ·
2
Replies
54
Views
7K
Graduate Is Minesweeper P or NP? A Fascinating Look into the Popular Computer Game
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Optimizing 2D Data Models: Best Routines for X & Error
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad The role of mathematics in physics (and science)
  • · Replies 21 ·
Replies
21
Views
11K
High School How Can a 4th Grader Solve the Chicken and Ducks Problem?
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Why are there 3 roots to a cubic equation?
  • · Replies 3 ·
Replies
3
Views
9K
Undergrad The Simpsons mathematic geek received no attention
  • · Replies 31 ·
2
Replies
31
Views
4K
Undergrad How Can Relational Algebra Be Used to Find Diseases With Only One Medication?
  • · Replies 3 ·
Replies
3
Views
3K
What Math Major Should Alex Choose?
  • · Replies 13 ·
Replies
13
Views
2K
High School Proof of the Simple Theorem: x^2 >= 0 for Real x
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad What is the equation of this parabola and the value of z?
  • · Replies 2 ·
Replies
2
Views
10K
Graduate Prove: $(a+b^2)(b+c^2)(c+a^2) \leq 13$
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad How to prove these tricky trig identities?
  • · Replies 5 ·
Replies
5
Views
4K
High School A Mathematical Mystery Revealed
  • · Replies 12 ·
Replies
12
Views
6K
Graduate Levi-Civita symbol and Summation
  • · Replies 15 ·
Replies
15
Views
12K
Undergrad Factoring the Sum of Two Fifth Powers
  • · Replies 7 ·
Replies
7
Views
11K
Graduate Prove Inequality 1/[a3(b+c)] + 1/[b3(a+c)] + 1/[c3(b+a)] >= 3/2 with Hint
  • · Replies 21 ·
Replies
21
Views
10K
Graduate What Are the Theoretical Forms for f(.) and g(.)?
  • · Replies 9 ·
Replies
9
Views
3K
High School Synthetic division or Long division of polynomials?
  • · Replies 6 ·
Replies
6
Views
25K
Undergrad Scalar equations, should be EASY but this has been bothering me for years
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Can Impossible Inequalities Be Solved with Positive Real Numbers?
  • · Replies 6 ·
Replies
6
Views
3K
High School Why is Euclid's Elements rarely taught in high school geometry classes?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Convergence of Vectors: Understanding the Angle Calculation
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Is this a Valid Method of Proving the Pythagorean Theorem?
  • · Replies 23 ·
Replies
23
Views
6K
Undergrad The two dimensional regular polygons.
  • · Replies 7 ·
Replies
7
Views
3K
High School How Long to Boil a Larger Kettle of Water?
  • · Replies 2 ·
Replies
2
Views
7K
Graduate What is the graph of an n-D hyperplane with 10 axis?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Is My Graphing Method for (1/x)<x<1 Correct?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Is it possible to write a program that outputs its own code in Perl?
  • · Replies 15 ·
Replies
15
Views
7K
Undergrad Numeral value of this Sin(1)*Sin(2)*Sin(3)* *Sin(89)
  • · Replies 16 ·
Replies
16
Views
29K
High School The Mystery of the Endless Decimals: Can .9 Recurring Equal 1?
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Weird reciprocal sums of integers
  • · Replies 14 ·
Replies
14
Views
3K
Can right brained people be good at Math ?
  • · Replies 10 ·
Replies
10
Views
21K
High School Explain the Golden Ratio: (a+b)/a=a/b
  • · Replies 11 ·
Replies
11
Views
9K
Graduate Can you solve the n-dimensional sphere packing problem?
  • · Replies 7 ·
Replies
7
Views
4K
High School How Much Does the Envelope Cost in the Riddle?
  • · Replies 12 ·
Replies
12
Views
5K
Undergrad Questions about phi and infinity?
  • · Replies 8 ·
Replies
8
Views
5K
High School Calculating Exterior Surface Area of Prism | Complex Maths
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Solve Hard Logic: Who Knows Their Hat Color?
  • · Replies 32 ·
2
Replies
32
Views
27K
High School What Are Other Types of Proportion Beyond Direct and Inverse?
  • · Replies 3 ·
Replies
3
Views
13K
High School Brainteaser: Solve the Rope Puzzle with Matches!
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Video inside: could someone explain how this works?
  • · Replies 3 ·
Replies
3
Views
3K
High School One Divided by Zero: What Is the Answer?
  • · Replies 5 ·
Replies
5
Views
12K
Graduate What is the significance of the complex Fourier spectrum in signal processing?
  • · Replies 1 ·
Replies
1
Views
6K
Graduate Fermat's Last Theorem is too Liberal
  • · Replies 17 ·
Replies
17
Views
4K
Undergrad What is the Solution to the Equation (ArcSinx)^3+(ArcCosx)^3 = a?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Parabolas and hyperbolas - how do you find them?
  • · Replies 5 ·
Replies
5
Views
6K
High School How do I simplify (x-5)+(x^2(x-5)) to (x^2+1)(x-5)?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Sin^5(x)+Cos^5(x) Equation Solution for Mathematicians
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Minimizing Area Bound by Parabola and Normal Chord: Putnam 1951 A6
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Need intro texts to Chaos theory
  • · Replies 2 ·
Replies
2
Views
6K
Undergrad How Does Signal Speed Change with Movement in Parallel Paths?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Descriptive Geometry challenge
  • · Replies 1 ·
Replies
1
Views
5K
High School Can you take an even root of a negative number?
  • · Replies 14 ·
Replies
14
Views
14K
Undergrad Will the title of my major have any effect on graduate school?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Sum-to-Product Identity for Multiple Cosine Functions
  • · Replies 8 ·
Replies
8
Views
24K
High School Square Root of a Negative Number?
  • · Replies 20 ·
Replies
20
Views
119K