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.
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Graduate Does Infinity Exist in the Real Universe?
- jeffery_winkle
- · Replies 4 ·
Undergrad Concerning equivalence of sini (sinus pl.(?))
- Master replies:
- · Replies 11 ·
Is \binom{n}{r} even for even n and odd r?
- mathgirl1
- · Replies 1 ·
Graduate Proof using mathematical induction
- cdummie
- · Replies 11 ·
High School Why is 2 greater than the square root of 2?
- brycenrg
- · Replies 3 ·
Is y² + x√(4x² + y²) = y² + (x/y)√(4(x/y)² + 1) for positive x and y?
- cbarker1
- · Replies 1 ·
Undergrad What is the significance of the diagonal line in Cobweb Diagrams?
- mr.tea
- · Replies 5 ·
Undergrad Can you solve the hardest logic problem?
- Willelm
- · Replies 26 ·
Undergrad What is the Calculation for 3D Slope?
- caters
- · Replies 3 ·
Insights Questions About Infinity - Comments
- micromass
- · Replies 15 ·
High School Why is my equation not working for finding the angles of a triangle?
- LogarithmLuke
- · Replies 2 ·
Solving NPV equation for costs
- myklfitz
- · Replies 1 ·
Two cars perpendicular roads and parabola vertex problems
- leads
- · Replies 1 ·
Learning Math: Best Practices for New Grad Students
- E01
- · Replies 1 ·
Generic TVM equation generating 1700 formulas
- AbrahamA
- · Replies 4 ·
Undergrad General Solution To Three Simultaneous Equations
- DavidZuccaro
- · Replies 4 ·
Finding sinΘ when cosΘ = -4/9 in quadrant II
- courtbits
- · Replies 3 ·
Real Zeros of a Polynomial Function
- Taryn1
- · Replies 8 ·
Prove Inequality: IMO $\frac{1}{x^4}+\cdots \geq \frac{128}{3(x+y)^4}$
- anemone
- · Replies 5 ·
Prove that angle BAD equals angle CEA in triangle ABC
- Mathick
- · Replies 2 ·
High School Is There a Way to Simplify This Equation Online?
- DavidZuccaro
- · Replies 3 ·
Graduate Complexity of Go: Calculating the Game Tree Estimate
- Astudious
- · Replies 1 ·
High School How does -h simplify to -1 in a derivative limit?
- LogarithmLuke
- · Replies 5 ·
Graduate Why does f(n)+1 being a perfect square prove f(n) is not?
- AcousticBruce
- · Replies 4 ·
Graduate Coordinate translation on a rotating plane
- newjerseyrunner
- · Replies 1 ·
High School What is the concept of infinity in mathematics?
- Hamza Abbasi
- · Replies 4 ·
Sketching absolute value graph
- GusGus335
- · Replies 1 ·
High School Is Choice A Correct for Comparing GRE Math Quantities?
- MartinV279
- · Replies 8 ·
Undergrad Understanding Infinity: Is Every Number Included?
- DaMeekie
- · Replies 1 ·
Simple Trigonometric Identities
- courtbits
- · Replies 9 ·
Can Absolute Values of Quadratic Functions Determine Their Discriminants?
- Mathick
- · Replies 1 ·
Graduate What conditions must a discrete-time waveform satisfy to span all others?
- RaduAndrei
- · Replies 4 ·
Graduate How does the Kalman filter calculate derivatives?
- haael
- · Replies 3 ·
Prove a triangle with sides satisfying $(x^4+y^4+z^4)^2=2(x^3+y^3+z^3)$ is right
- anemone
- · Replies 10 ·
High School A strange inconsistency when calculating area with decimals
- dmehling
- · Replies 3 ·
Undergrad What is a frequency domain and s domain?
- KittuTarun
- · Replies 1 ·
Undergrad What's the logic behind partial fraction decomposition?
- A.MHF
- · Replies 2 ·
Insights Is there a rigorous proof that 1 equals 0.999...?
- micromass
- · Replies 9 ·
Undergrad Is Infinity Divided by Infinity Equal to 1?
- Einstein's Cat
- · Replies 5 ·
High School Natural Logarithms: Are They Equal to Other Logarithms?
- funlord
- · Replies 6 ·
High School Can a^0 Equal 1? A Simple Proof
- brunopinto90
- · Replies 26 ·
Finding speed after motorcycle accident from 12m skid distance
- bikerguy
- · Replies 4 ·
Undergrad Gimblestitch Archmage's Amusing Number Theorem
- Gimblestitch
- · Replies 7 ·
Water Displacement Volume question
- akarikairi
- · Replies 2 ·
Undergrad Circle in the Euclidean space using Euler's Number
- OrthoJacobian
- · Replies 3 ·
Prove: Inequality $9\gt \sqrt{a-1}+\sqrt{19-3a}+\sqrt{2a+9}$
- anemone
- · Replies 2 ·
Black Plastic Lid - Measurement Ratio
- shamieh
- · Replies 2 ·
High School Is f(x) a function or a value?
- Nicocin
- · Replies 12 ·
Undergrad Which One Time Pad Cipher Would Be "Most Unbreakable" ?
- Point Conception
- · Replies 2 ·
Graduate Form factored of the polynomial discriminant
- Bruno Tolentino
- · Replies 2 ·
High School How to Find This without Calculator?
- basty
- · Replies 6 ·
High School Does a cone cut from a sphere have a name?
- Grimble
- · Replies 4 ·
Undergrad What does " to first order" mean ?
- dyn
- · Replies 1 ·
Some miscallenous multi choice questions
- Fermat1
- · Replies 3 ·
Undergrad The Power of Math: How It Shapes Our World
- Satonam
- · Replies 7 ·
Ratio problem: finding boys last year given girl ratio changes
- teddunner
- · Replies 4 ·
Undergrad Solving Nonlinear System: \alpha,\beta,\gamma from A,B,C
- Bruno Tolentino
- · Replies 4 ·
Graduate Important pi question (when these numbers will reoccur)
- 9I.
- · Replies 3 ·
High School Converting cubic cm to cubic m and kg/m^3 to g/cm^3 etc
- Cliff Hanley
- · Replies 8 ·
Proving $(x^2+1)(y^2+4)(z^2+9) \ge 100$ for $6x+3y+2z=10+xyz$
- anemone
- · Replies 2 ·
Graduate How can we converge to transcendental numbers beyond e?
- Bob3141592
- · Replies 5 ·
High School Converting decimals to fractions
- Cliff Hanley
- · Replies 7 ·
Physics license plate with DXDP=H/2
- RedneckPhysics
- · Replies 3 ·
Graduate Perfect squares in the interval (n, 2n) for n > 4
- Raffaele
- · Replies 5 ·
Finding Domain of f(x)=\frac{1}{x^{2}-x-6}
- badatmath
- · Replies 5 ·
Graduate Sum of number of divisors of first N natural numbers
- suchith
- · Replies 4 ·
Prove Inequality: $(x+y)^2/2+ (x+y)/4 \ge x\sqrt{y}+y\sqrt{x}$
- anemone
- · Replies 6 ·
Undergrad Without any loss of generality
- Kostas Tzim
- · Replies 4 ·
Find the Ratio of $\overline{BD}: \overline{CD}$ in $\triangle ABC$
- Albert1
- · Replies 2 ·
Graduate Proving $\sqrt{2}+\sqrt{3} \gt \pi$: A Mathematical Challenge
- anemone
- · Replies 6 ·
Undergrad Why is pi equal to 3.14159...?
- Stephanus
- · Replies 30 ·
Undergrad The Trigonometery functions in other presentation
- DaniV
- · Replies 2 ·
Undergrad Locus of centers in a triangle formed by a point on an ellipse and its two foci
- gianeshwar
- · Replies 14 ·
Sum of 1/n2 or 61/36: Which is Bigger?
- Albert1
- · Replies 3 ·
Graduate Solving this set of trigonometric equations
- Kallol
- · Replies 3 ·
Undergrad Cubic Formula: Is There a Unique Way to Write It?
- Bruno Tolentino
- · Replies 1 ·
Finding $x$ and $y$ Given $A, G, H \in N$ and $A+G+H=49$
- Albert1
- · Replies 3 ·
Undergrad Simplifying √(x-2)² in a rational expression
- Mr Davis 97
- · Replies 4 ·
Max n for Sum of 3 Numbers Multiple of 27 in A
- Albert1
- · Replies 2 ·
Undergrad What is the optimal way to divide a picture into jigsaw puzzle pieces?
- DaveC426913
- · Replies 11 ·
Graduate Cyclic Permutations: εijk, Even or Odd?
- Karol
- · Replies 2 ·
Find all real solutions to x+y+xy=11 and x²+xy+y²=19
- Albert1
- · Replies 1 ·
High School I have a quick question on square roots.
- DTRapture
- · Replies 9 ·
How to find a general solution to sec2 2x = 1– tan 2x
- arejet
- · Replies 2 ·
How Do You Convert a Trigonometric Expression into a Sine Equation Form?
- karush
- · Replies 8 ·
Undergrad Order of transformation of functions?
- Mr Davis 97
- · Replies 5 ·
High School Bidmas (brackets; indices; divide/multiply; add/subtract)
- Cliff Hanley
- · Replies 8 ·
Undergrad Value of studying number theory?
- Mirero
- · Replies 7 ·
Triangle OP_iQ_i equilateral and finding P_2003*Q_2003
- ranjan69
- · Replies 5 ·
Graduate Showing that the Ratio of Two Expressions is Always Greater Than 1
- brainpushups
- · Replies 3 ·
Solve Inequality Challenge: Prove $35\sqrt{55}+55\sqrt{77}+77\sqrt{35}\gt 2310$.
- anemone
- · Replies 2 ·
High School Technical Order of Operation Question
- starrynight108
- · Replies 19 ·
Proving $x^2+y^2\ge 2$ with Given $x^3-y^3=2$ and $x^5-y^5\ge 4$
- anemone
- · Replies 2 ·
High School Why triangulation gives different angles for objects with equal apparent size
- ViolentCorpse
- · Replies 13 ·
A Fact I Observed While Looking at the Proof of the Pythagorean Theorem.
- caffeinemachine
- · Replies 6 ·
High School Comprehensive textbook series from algebra to calculus
- Ben Cohen
- · Replies 14 ·
Finding the 4th side of an irregular quadrilateral with sides 180, 240, 200 ft
- karush
- · Replies 1 ·
Graduate Solve Trigonometric Problem for Dynamics: 4th Hint Equation
- manongistong
- · Replies 2 ·
Undergrad England's Court of Appeal Rules On Meaning of 'One'
- StevieTNZ
- · Replies 6 ·
Can Cotangent Sums Exceed 2/3 in Acute Triangles with Perpendicular Medians?
- Albert1
- · Replies 2 ·