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
MHB Is Every Statement Correct in Defining an Onto Function?
  • · Replies 6 ·
Replies
6
Views
2K
MHB -gre.ge.2 distance by similiar triangles
  • · Replies 2 ·
Replies
2
Views
1K
MHB -gre.ge.04 intersection of parabola and line
  • · Replies 5 ·
Replies
5
Views
2K
MHB Centripetal acceleration of viking ship in the amusement park.
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Partition function in number theory and statistical mechanics
  • · Replies 1 ·
Replies
1
Views
1K
MHB Prove Divisibility: $(x-y)^2+(y-z)^2+(z-x)^2=xyz$ yields $x^3+y^3+z^3$
  • · Replies 1 ·
Replies
1
Views
2K
High School Can You Solve This Exercise on Arithmetic-Geometric Series?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Frequency estimation - Minimising the number of samples
  • · Replies 12 ·
Replies
12
Views
2K
MHB [ASK] Seemingly Simple Limit Question but I have no Idea
  • · Replies 2 ·
Replies
2
Views
1K
MHB Question about centripetal acceleration.
  • · Replies 3 ·
Replies
3
Views
2K
MHB [ASK] Limit of Trigonometry Function
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad A thought about the Riemann hypothesis
  • · Replies 7 ·
Replies
7
Views
2K
MHB Solve System of 2 Variables: $x^5+y^5=33,\,x+y=3$
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Is Complex Differentiation Defined for Linear Transformations?
  • · Replies 4 ·
Replies
4
Views
1K
MHB How to solve following optimization problem?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Finding the change in position and angle after moving the rectangle
  • · Replies 4 ·
Replies
4
Views
2K
MHB Solving System of Equations: xy, yz, zx
  • · Replies 3 ·
Replies
3
Views
1K
MHB Computation of the ratio of barometric pressure
  • · Replies 6 ·
Replies
6
Views
2K
MHB Lattice energy, hydration energy, solution energy
  • · Replies 1 ·
Replies
1
Views
1K
MHB How can the perpendicular diagonals of a triangle help prove HCD?
  • · Replies 10 ·
Replies
10
Views
2K
MHB Prove Similar Triangles: $\sqrt{aa_1}+\sqrt{bb_1}+\sqrt{cc_1}$
  • · Replies 1 ·
Replies
1
Views
1K
MHB Polynomial with integer coefficients
  • · Replies 1 ·
Replies
1
Views
2K
MHB A Guide to Finding the Perfect Vacation Spot
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Finding the Velocity of an object due to an imparted force
  • · Replies 15 ·
Replies
15
Views
3K
MHB How Do You Calculate a Z Score for Toothpaste Effectiveness Testing?
  • · Replies 1 ·
Replies
1
Views
1K
MHB Prove Triangle Inequality: $\frac{a}{\sqrt[3]{4b^3+4c^3}}+...<2$
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Plotting polar equations and scale invariance
  • · Replies 7 ·
Replies
7
Views
2K
MHB What is the Trigonometric Inequality for $0<x<\dfrac{\pi}{2}$?
  • · Replies 1 ·
Replies
1
Views
1K
High School Is there a formula to get x in Excel without using solver: 0.5^x+0.2^x+0.25^x=1
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Simplest self-contained numeral system for complex numbers?
  • · Replies 8 ·
Replies
8
Views
2K
The Importance of Geometry in one's Mathematical Foundation
  • · Replies 10 ·
Replies
10
Views
2K
MHB Rational Inequalities: Solve & Understand | Math
  • · Replies 4 ·
Replies
4
Views
1K
MHB Prove Inequality: $\sqrt{ab}+\sqrt{cd}\le \sqrt{(a+d)(b+c)}$
  • · Replies 1 ·
Replies
1
Views
1K
MHB Master Calculus Questions with Expert Tips | Boost Your Grades
  • · Replies 1 ·
Replies
1
Views
2K
MHB Word problem for winning percentage
  • · Replies 1 ·
Replies
1
Views
1K
MHB Positive Integers: Evaluate $a+b+c$
  • · Replies 1 ·
Replies
1
Views
1K
MHB Can You Divide the Functions $P(t)$ and $N(t)$ to Simplify?
  • · Replies 1 ·
Replies
1
Views
1K
MHB Is the Given Answer for the Classical Mechanics Problem on Earth Correct?
  • · Replies 3 ·
Replies
3
Views
1K
MHB Congruence of ACB & CED: Similarity Chapter
  • · Replies 1 ·
Replies
1
Views
1K
MHB Prove Simultaneous Equations: $a+b+c+d \ne 0$
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Help - Derivation of Pulsating Star Euler ODE
  • · Replies 3 ·
Replies
3
Views
1K
High School Tesseract Dimensions: Inner Cube vs Outer Cube
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Two vectors and two perpendicular lines
  • · Replies 20 ·
Replies
20
Views
2K
MHB Get Expert Help: How to Find Answers Quickly and Easily
  • · Replies 1 ·
Replies
1
Views
805
MHB Direct solution for two unknowns in two equations
  • · Replies 2 ·
Replies
2
Views
1K
MHB Combinations / Sets of objects
  • · Replies 1 ·
Replies
1
Views
2K
MHB Finding $a$ and $b$ for $f(x)=|\lg (x+1)|$
  • · Replies 3 ·
Replies
3
Views
978
Graduate Applications of analysis in signal processing/machine learning?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Probability that two points are on opposite sides of a line
  • · Replies 11 ·
Replies
11
Views
2K
MHB How to compute the energy needed to compress the water isothermally?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad What are all the positive integers that satisfy this equation?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Understanding Algebraic Numbers & Proving Them
  • · Replies 1 ·
Replies
1
Views
2K
MHB Is $p\equiv 3\pmod{4}$ a condition for $\pi$ to be an even permutation?
  • · Replies 1 ·
Replies
1
Views
1K
MHB Calculating $$\sum_{0 \le k \le n}(-1)^k k^n \binom{n}{k}$$
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Intersection of a 4D line and a 3D polyhedron in 4D
  • · Replies 3 ·
Replies
3
Views
2K
MHB Maths in Temperature and ideal gas Thermometer
  • · Replies 2 ·
Replies
2
Views
1K
MHB Solve a Quadratic Equation with Vertex Form
  • · Replies 6 ·
Replies
6
Views
2K
MHB Is tan(x)^2 proper notation for the trig function tangent squared?
  • · Replies 4 ·
Replies
4
Views
2K
MHB Dstermine the equation of function
  • · Replies 2 ·
Replies
2
Views
1K
MHB First, second and third derivatives of a polynomial
  • · Replies 1 ·
Replies
1
Views
2K
MHB Coulomb's Constant in electron energy formula.
  • · Replies 1 ·
Replies
1
Views
1K
MHB Real Estate math word problem help
  • · Replies 3 ·
Replies
3
Views
2K
MHB -gre.ge.11 x,y of fourth corner of diagonal
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Can We Discover a Number Set More General Than Reals with Similar Properties?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Isn't it terrifying that AI can become smarter than any Mathematician?
  • · Replies 40 ·
2
Replies
40
Views
5K
MHB Answer a Chemistry Question: Rock Salt & Ice Cream
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Why are the numbers switched around in this partial differential problem?
  • · Replies 2 ·
Replies
2
Views
1K
MHB Math Problem: 10000-(2x300+4x700)÷2
  • · Replies 1 ·
Replies
1
Views
1K
High School Verifying trig identities.... what about when tan is undefined?
  • · Replies 2 ·
Replies
2
Views
1K
MHB What is the final pressure of helium and neon gas mixture in this case?
  • · Replies 1 ·
Replies
1
Views
1K
MHB Find maximum area of a triangle
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How can I rotate a vector in 3D to match another vector's rotation?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Why was the substitution x = y - b/3a used in Cardano's Cubic Formula?
  • · Replies 10 ·
Replies
10
Views
3K
MHB Uncovering Patterns in Questions
  • · Replies 1 ·
Replies
1
Views
1K
High School LEAN The New Way to Prove Theorems
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Is a vector itself contra/covariant or just its components?
  • · Replies 22 ·
Replies
22
Views
3K
MHB Can you prove this inequality challenge?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Connection of zeta to primes: less Euler than error or L-functions?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Determine the equation of the parabola
  • · Replies 1 ·
Replies
1
Views
1K
High School Why does the Wikipedia article use a negative sign in the 4-gradient?
  • · Replies 7 ·
Replies
7
Views
2K
High School Commutative & Associative property of negative numbers
  • · Replies 4 ·
Replies
4
Views
3K
High School Why does the radius of a unit circle need to be 1?
  • · Replies 36 ·
2
Replies
36
Views
5K
MHB What Are the Different Forms of Quadratic Equations?
  • · Replies 1 ·
Replies
1
Views
952
MHB Solve Equation: $\sqrt{1+\sqrt{1-x^2}}$
  • · Replies 3 ·
Replies
3
Views
1K
MHB How do I find the Euclidean Coordinate Functions of a parametrized curve?
  • · Replies 1 ·
Replies
1
Views
1K
MHB What are the solutions to the equation 2^x + 2/2^x = 3?
  • · Replies 3 ·
Replies
3
Views
1K
MHB What is the result of 6 divided by 2(1+2)?
  • · Replies 2 ·
Replies
2
Views
1K
MHB Double summation: inner index = function of outer index
  • · Replies 2 ·
Replies
2
Views
1K
MHB How Do You Solve a Geometric Sum with Alternating Signs?
  • · Replies 2 ·
Replies
2
Views
2K
MHB How Can You Calculate the Area of Shaded Regions in Complex Geometric Figures?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Finding the Coordinates of Point D
  • · Replies 1 ·
Replies
1
Views
1K
MHB Can You Solve This Challenging Inequality Problem?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Max Value of |bc| for Complex Numbers in Inequality
  • · Replies 2 ·
Replies
2
Views
1K
MHB Creating Triangles: How Many Can You Make?
  • · Replies 3 ·
Replies
3
Views
1K
High School Domain of a composite function
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad How to calculate successive resultant values of a continued fraction
  • · Replies 12 ·
Replies
12
Views
2K
High School If and only if versus if .... then
  • · Replies 2 ·
Replies
2
Views
1K
MHB Solve Real Number $x$ That Satisfies Equation
  • · Replies 4 ·
Replies
4
Views
1K
Graduate Don't understand this function, s(cosξ + j sinξ) in my textbook
  • · Replies 4 ·
Replies
4
Views
880
Undergrad How Do You Reverse a 2.5D Projection Function in Programming?
  • · Replies 3 ·
Replies
3
Views
1K