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 What is the relationship between frequency and angular speed?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Help with Lab Work: Acids and Bases Safety
  • · Replies 14 ·
Replies
14
Views
6K
High School Is Figure a Polygon? Examining Edges of the Image
  • · Replies 5 ·
Replies
5
Views
2K
MHB Expression sin^n(x)/(sin^n(x)+cos^n(x))
  • · Replies 2 ·
Replies
2
Views
2K
MHB (0,a) , (b,0) , (2,d) and (e,7) lie on y=2x+1, find a, b, d and e
  • · Replies 2 ·
Replies
2
Views
2K
MHB Wacky explanation in a student solutions manual for manipulating an equation
  • · Replies 3 ·
Replies
3
Views
1K
MHB Solving a Challenging Math Problem | Expert Tips & Strategies
  • · Replies 1 ·
Replies
1
Views
2K
MHB Scale Drawing: What is the real length of the bus
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Looking for specific anecdote on math of rogue waves
  • · Replies 8 ·
Replies
8
Views
2K
MHB Sum of the measures of the interior angles of a heptagon
  • · Replies 1 ·
Replies
1
Views
2K
MHB Solving equation in natural number
  • · Replies 1 ·
Replies
1
Views
2K
MHB How Can I Prove AH = DK in Triangle Congruency?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Elementary Number Theory proof
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Has the Riemann hypothesis been proven?
  • · Replies 74 ·
3
Replies
74
Views
18K
MHB The shifting of h in vertex form
  • · Replies 1 ·
Replies
1
Views
2K
High School How would I write this trig solution?
  • · Replies 19 ·
Replies
19
Views
3K
High School Euclid Division Lemma: Origins & Legacy
  • · Replies 4 ·
Replies
4
Views
2K
MHB Understand Polynomial Terms: Like & Unlike Terms
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Are All Triangles Actually Isosceles? Discover My Greek-Euclidean Proof!
  • · Replies 3 ·
Replies
3
Views
2K
MHB K-th convergents of continued fraction
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Bezout Identity: Is r∈S U {0} Necessary to Prove?
  • · Replies 3 ·
Replies
3
Views
2K
High School Proving Euclid's Lemma: The Role of Primality in Divisibility
  • · Replies 6 ·
Replies
6
Views
2K
MHB Solutions of an inequality (1-√(1-4x^2)/x < 3
  • · Replies 4 ·
Replies
4
Views
2K
MHB Help with solution concentration
  • · Replies 2 ·
Replies
2
Views
3K
MHB Convert £0.91 to UK Decimal Currency - Help Needed
  • · Replies 3 ·
Replies
3
Views
2K
Elias Stein, Mathematician Of Harmonic Analysis has Died
  • · Replies 1 ·
Replies
1
Views
1K
High School Periodic smooth alternating series other than sin and cos
  • · Replies 16 ·
Replies
16
Views
3K
High School Why Do Some People Struggle with Math?
  • · Replies 55 ·
2
Replies
55
Views
10K
High School How to find the inverse of this equation
  • · Replies 12 ·
Replies
12
Views
2K
MHB Which Quadratic Function Has Exactly One X-Intercept?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Quadratic, cubic, quartic, quintic equations
  • · Replies 16 ·
Replies
16
Views
5K
MHB Challenging Classical Mechanics Problems: Can You Solve Them?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Formal proof for the theorem of corresponding angles
  • · Replies 1 ·
Replies
1
Views
2K
MHB Volume vs Capacity for Kids: Tips for Explaining
  • · Replies 2 ·
Replies
2
Views
1K
High School How Do You Solve This Mysterious Number Puzzle?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate The Passing of another Great Mathematician
  • · Replies 2 ·
Replies
2
Views
2K
High School Help identifying a mathy thing
  • · Replies 9 ·
Replies
9
Views
1K
MHB Inequation with just 3 solutions
  • · Replies 4 ·
Replies
4
Views
2K
MHB Do Pi and Geometric Shapes Coexist?
  • · Replies 3 ·
Replies
3
Views
3K
MHB What are some interesting approximations of pi?
  • · Replies 5 ·
Replies
5
Views
2K
MHB Interesting property about 2019( the current year)
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Is fractal nature dependent on the number of steps?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Converting from spherical to cylindrical coordinates
  • · Replies 13 ·
Replies
13
Views
3K
MHB Finding the width of the gorge
  • · Replies 4 ·
Replies
4
Views
3K
MHB Change bisector from one triangle to another
  • · Replies 1 ·
Replies
1
Views
2K
Calculator or not? (from the TV show Numb3rs)
  • · Replies 20 ·
Replies
20
Views
3K
High School A primitive function graphing tool
  • · Replies 1 ·
Replies
1
Views
2K
High School A new Mersenne prime being found
  • · Replies 2 ·
Replies
2
Views
2K
MHB Find the roots of f(x)+g(x)+h(x) = 0.
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Modular forms- definition of a cusp
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Need a proper mathematical name
  • · Replies 7 ·
Replies
7
Views
1K
Undergrad Mathematical Induction 4+11+14+21+....+(5n+(-1)^n
  • · Replies 1 ·
Replies
1
Views
2K
MHB Amazing Math Discovery: 8281 is the Only 4 Digit Square with this Quirk
  • · Replies 5 ·
Replies
5
Views
2K
High School What is the formula for this sequence for n-th number
  • · Replies 5 ·
Replies
5
Views
2K
MHB What is the Magnitude of Force P to Keep a Block Stationary Against a Wall?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Existence of experience related to i
  • · Replies 16 ·
Replies
16
Views
2K
Undergrad Why can't I reach every cell in a 3x3 square?
  • · Replies 8 ·
Replies
8
Views
3K
MHB Understanding Unit Cancellation in Physics Equations
  • · Replies 2 ·
Replies
2
Views
2K
MHB Answers: ANUTter Rebus Puzzle Solution
  • · Replies 4 ·
Replies
4
Views
2K
MHB Find the area of the shaded region in terms of pi.
  • · Replies 3 ·
Replies
3
Views
2K
MHB Terminal Velocity Calculation: Understanding Forces at Play
  • · Replies 8 ·
Replies
8
Views
3K
MHB Find the areas of segment in circle
  • · Replies 1 ·
Replies
1
Views
2K
MHB Find the area of sector in a circle in terms of pi. (Geometry)
  • · Replies 3 ·
Replies
3
Views
2K
MHB Find the height and base of a trapezium
  • · Replies 1 ·
Replies
1
Views
2K
MHB Areas of Plane Figures: 63.0 & 96.0 | Need Help w/ 3 & 4
  • · Replies 3 ·
Replies
3
Views
2K
MHB Find radius, circumference, area and arc length in circle
  • · Replies 2 ·
Replies
2
Views
2K
MHB Left or Right Angles ( + or - ) of adjoining vectors
  • · Replies 2 ·
Replies
2
Views
2K
High School Quickest way to calculate a given summation
  • · Replies 7 ·
Replies
7
Views
1K
High School "y as a function of x" meaning
  • · Replies 25 ·
Replies
25
Views
16K
MHB Need help with Physics with trigonometry problems ?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Calculating Triangle Side Length with Known Angles and Radius
  • · Replies 2 ·
Replies
2
Views
2K
MHB What are the domain and range for the inverse function $f^{-1}$ of $f$?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Express cos(2 tan^-1(x/4)) and sin(2tan^-1(x/4) as an algebraic expression in x
  • · Replies 3 ·
Replies
3
Views
2K
MHB Triangle ABC has area 25*sqrt(3). if Angle BAC=30 degrees, find |AC|=|BC|=?
  • · Replies 1 ·
Replies
1
Views
2K
MHB What is the area of an isosceles triangle with side lengths 6, 6, and 4?
  • · Replies 1 ·
Replies
1
Views
2K
High School What is Extraversion in Triangle Geometry?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Arrange 4-Gon Figures: Find Descendants w/o Descendants
  • · Replies 4 ·
Replies
4
Views
2K
High School Daily math challenge calendar (external)
  • · Replies 2 ·
Replies
2
Views
2K
MHB Number of Handshakes at UN Meeting: 15
  • · Replies 1 ·
Replies
1
Views
1K
MHB HELP How to calculate wage for assistants at hair salon?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Can You Crack This Unique 1-15 Number Puzzle Grid?
  • · Replies 3 ·
Replies
3
Views
2K
MHB Pre-calculus Grade 11 IB (higher level)
  • · Replies 2 ·
Replies
2
Views
2K
MHB Calculating g(x) for Y=f(x) Passing Through Points
  • · Replies 2 ·
Replies
2
Views
2K
MHB Kinematics Application Question - Physics 11u
  • · Replies 7 ·
Replies
7
Views
2K
High School Why Does This Happen? Investigating Common Causes
  • · Replies 17 ·
Replies
17
Views
2K
MHB Determining the Degrees of an Angle Given Three X and Y Coordinates
  • · Replies 1 ·
Replies
1
Views
1K
High School Applications of Morley's Theorem
  • · Replies 1 ·
Replies
1
Views
3K
MHB Need formula for solving ellipse radius with equal spacing points
  • · Replies 5 ·
Replies
5
Views
3K
High School What is the name of this operation? (Inverse Exponent?)
  • · Replies 11 ·
Replies
11
Views
2K
MHB Convert polar equation r= 1/1+sin(theta) to rectangular equation
  • · Replies 2 ·
Replies
2
Views
2K
MHB Convert polar equation sec(theta)=2 to rectangular equation
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Infinity x 0: Is the Answer Zero?
  • · Replies 5 ·
Replies
5
Views
2K
MHB Guidelines for submitting solutions to POTW
  • · Replies 1 ·
Replies
1
Views
2K
MHB Is there a non-regular hexagon
  • · Replies 9 ·
Replies
9
Views
8K
MHB What is the total area of the doors and windows in the room?
  • · Replies 7 ·
Replies
7
Views
2K
MHB Countdown to An Answer Ain't Easy!
  • · Replies 6 ·
Replies
6
Views
2K
High School Why aren't repeating decimals (such as 1/3) infinitely large?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Fractal Dimension & Degree of Freedom
  • · Replies 5 ·
Replies
5
Views
2K
MHB Trig Functions: When Plugging in x Returns x
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad What is the meaning of the superscript "+"?
  • · Replies 10 ·
Replies
10
Views
2K