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 New way to derive sectors of a circle (easy)
  • · Replies 3 ·
Replies
3
Views
2K
MHB Solve Equation II: $(1+a!)(1+b!)=(a+b)!$
  • · Replies 2 ·
Replies
2
Views
2K
MHB Emptying and filling a tank word problem.
  • · Replies 2 ·
Replies
2
Views
6K
MHB Proving the Irrationality of $\sqrt{3}$
  • · Replies 4 ·
Replies
4
Views
2K
MHB Can you prove this trigonometric equation? 3cos(p+s)=7cos(q+r)
  • · Replies 2 ·
Replies
2
Views
2K
MHB Kim's Questions on Babylonian Method for Estimating Square Roots
  • · Replies 1 ·
Replies
1
Views
6K
MHB Solving Equations with Exponents: How to Find the Value of x
  • · Replies 5 ·
Replies
5
Views
2K
What has Euler got on his head here?
  • · Replies 3 ·
Replies
3
Views
5K
MHB Parrot Guy's question at Yahoo Answers regarding a summation proof by induction
  • · Replies 1 ·
Replies
1
Views
2K
MHB Solving Sequence Problem with Elementary Math Concepts
  • · Replies 4 ·
Replies
4
Views
2K
High School Find the Next Term in the Math Sequence?
  • · Replies 12 ·
Replies
12
Views
3K
MHB Union of 2 Squares: How Many Regions Can Mike Get?
  • · Replies 3 ·
Replies
3
Views
5K
MHB Solve Quadratic Equation: $\mathcal{E}$ Experiment
  • · Replies 3 ·
Replies
3
Views
2K
MHB Solve Equation: Find Real $a$ for $10^a+12^a-14^a=13^a-11^a$
  • · Replies 3 ·
Replies
3
Views
1K
MHB Solving equation with fraction & bracket help required please
  • · Replies 23 ·
Replies
23
Views
10K
High School Going from proportional to equals
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Isolating a variable gives me endless loop
  • · Replies 6 ·
Replies
6
Views
2K
MHB Find the least positive integer
  • · Replies 2 ·
Replies
2
Views
1K
MHB Angle of elevation and depression problems
  • · Replies 1 ·
Replies
1
Views
3K
MHB Solving the Lawn Mowing Puzzle: Explained!
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What function was used for current record of decimal places of EM cnst
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Distinguish pq Prime Cases: Algorithm for ppt
  • · Replies 10 ·
Replies
10
Views
2K
MHB Calculate Real Values of $x$ in Exponential Equation
  • · Replies 2 ·
Replies
2
Views
2K
High School Deciding on a proper graphing calculator window?
  • · Replies 4 ·
Replies
4
Views
2K
High School Can someone prove this basic identity?
  • · Replies 9 ·
Replies
9
Views
2K
MHB Rearranging the subject of an equation help please
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Multiplying the two inequalities
  • · Replies 3 ·
Replies
3
Views
5K
MHB SAT Math: Greatest Possible Area of Triangle (7, 10)
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Areas of a series of annular sectors
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Does point really exist?a mathematical concep
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad How to derive a function from an irregular table of values?
  • · Replies 10 ·
Replies
10
Views
6K
High School I can't remember how to solve equations with logarithms/exponents
  • · Replies 11 ·
Replies
11
Views
3K
High School Pi Day Misconception: Is Pi an Irrational Number?
  • · Replies 5 ·
Replies
5
Views
3K
MHB Moment of Force F & P: Calculation & Solution
  • · Replies 1 ·
Replies
1
Views
2K
MHB Solving Trig Equation: Find the Answer Quickly
  • · Replies 2 ·
Replies
2
Views
2K
High School Understanding the Relationship Between Sine Waves and Sine Angles?
  • · Replies 7 ·
Replies
7
Views
4K
MHB What Is the Acceleration and Tension in a Two-Mass System on an Inclined Plane?
  • · Replies 2 ·
Replies
2
Views
2K
High School Ax+b=0 is one-variable linear equation
  • · Replies 8 ·
Replies
8
Views
3K
Welcome to PF! Improving Math/Physics Together
  • · Replies 13 ·
Replies
13
Views
2K
High School Pythagoras Theorem: Is Variance of a Straight Line Zero?
  • · Replies 1 ·
Replies
1
Views
1K
MHB Determine Compositions of Functions
  • · Replies 14 ·
Replies
14
Views
5K
MHB How to Find the Volume of a Tetrahedron?
  • · Replies 3 ·
Replies
3
Views
5K
MHB Evaluate ab+bc+ca Given Real Numbers
  • · Replies 2 ·
Replies
2
Views
2K
MHB Calculate $(ab,p^4)$: Prime Number Exercise
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Still looking for a list of Ramanujan identities, very expensive
  • · Replies 10 ·
Replies
10
Views
2K
High School How can Logarithms be applied to real life situations and examples?
  • · Replies 4 ·
Replies
4
Views
7K
Undergrad Irrational^rational = rational
  • · Replies 10 ·
Replies
10
Views
3K
MHB Is simplification of sin(x) * (1 - sqrt(cos(x)) possible?
  • · Replies 4 ·
Replies
4
Views
3K
MHB Find the largest positive real root
  • · Replies 2 ·
Replies
2
Views
2K
High School Quadratic equation - how to understand the impact of the middle term?
  • · Replies 6 ·
Replies
6
Views
6K
MHB What are the values of a_n and b_n for a given sequence?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Jackin's question at Yahoo Answers regarding a linear recurrence
  • · Replies 1 ·
Replies
1
Views
1K
MHB Solve $a_n>0$ Math Problem for $a_n$ with Given Sequence
  • · Replies 5 ·
Replies
5
Views
2K
MHB Finding the acceleration of a soldier dropeed into a snow bank
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Function that equals 1 at x=0, but 0 everywhere else?
  • · Replies 14 ·
Replies
14
Views
9K
MHB How can $5^{1985}-1$ be factored into three integers greater than $5^{100}$?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Find zeros of the function... check my answers? f(x)= x^2+16x+62?
  • · Replies 9 ·
Replies
9
Views
3K
MHB Finding $a+b$ given $(3a+b)^2+6a-2b=1544$
  • · Replies 2 ·
Replies
2
Views
1K
MHB Solving $(a,b)=1 \Rightarrow (a^m,b^n)=1$ without Primes
  • · Replies 1 ·
Replies
1
Views
2K
MHB Cocktail "Recursive": Alcohol, Water & Final Composition
  • · Replies 5 ·
Replies
5
Views
2K
High School Function/Curve that goes through certain points?
  • · Replies 1 ·
Replies
1
Views
1K
MHB Is the area of a parallelogram equal to a/b times sine alpha?
  • · Replies 6 ·
Replies
6
Views
3K
MHB Solve $25^a+9^a+4^a=15^a+10^a+6^a$ Equation
  • · Replies 3 ·
Replies
3
Views
2K
MHB Trentan's question at Yahoo Answers regarding a trigonometric equation
  • · Replies 1 ·
Replies
1
Views
2K
MHB Prove that number is not a perfect square
  • · Replies 10 ·
Replies
10
Views
8K
MHB What is the value of the sum of reciprocals of the roots in a cubic equation?
  • · Replies 5 ·
Replies
5
Views
2K
MHB Triangle and logarithm problem
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Approximation of values from non-closed form equation.
  • · Replies 3 ·
Replies
3
Views
2K
MHB Angle of Elevation: Calculating Height of Statue
  • · Replies 2 ·
Replies
2
Views
2K
MHB What is the value of $\dfrac{f(-5)+f(9)}{4}$ in the Polynomial Challenge III?
  • · Replies 6 ·
Replies
6
Views
2K
MHB Integration Formulas: Do We Really Need to Memorize Them?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Can Multiple Periods Determine a Fundamental Period in Functions?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Challenge 11: Sequence of Primes
  • · Replies 5 ·
Replies
5
Views
4K
Graduate What is wrong with my summation formula?
  • · Replies 2 ·
Replies
2
Views
2K
High School What is 0/0 and why does it cause so much confusion?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Redundancy in mathematical properties
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Parody math paper - defining properties
  • · Replies 3 ·
Replies
3
Views
2K
MHB Solve Equation II: $\frac{25x-2}{4}=\frac{13x+4}{3}$
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Number Theory - Proving x is not a perfect square?
  • · Replies 7 ·
Replies
7
Views
3K
MHB Show the result of the sum of a series isn't a prime number
  • · Replies 10 ·
Replies
10
Views
2K
MHB Stopping a Spaceship: Calculating the Required Force from Backthrusters
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Is the Fourth Dimension Really Time or Something Else?
  • · Replies 21 ·
Replies
21
Views
5K
MHB Finding values a, b, c, d, e, f
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Famous math problems in machine learning and AI ?
  • · Replies 1 ·
Replies
1
Views
3K
High School What is Common Core 32 -12 and how can I solve it?
  • · Replies 3 ·
Replies
3
Views
5K
MHB Electrostatic Force: Effects of Distance
  • · Replies 1 ·
Replies
1
Views
2K
MHB Elastic Collision of 2 Masses: Calculating \(v'\) and \(V_0'\)
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Looking for a specific math notation
  • · Replies 2 ·
Replies
2
Views
2K
High School Why Is the Order of Operations Important in Math?
  • · Replies 18 ·
Replies
18
Views
3K
Undergrad Determining quantities as vectors or not
  • · Replies 1 ·
Replies
1
Views
1K
MHB The Reflection Property of a Hyperbola
  • · Replies 2 ·
Replies
2
Views
6K
MHB There are no a,b such that a^n-b^n|a^n+b^n
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Find Out How Many Combinations of n Squares Exist
  • · Replies 2 ·
Replies
2
Views
1K
MHB Prove Trigonometric Equality: $tan 1^o+tan 5^o+tan 9^o = tan 177^o-45$
  • · Replies 2 ·
Replies
2
Views
2K
High School Confusing Students with Fractions
  • · Replies 3 ·
Replies
3
Views
2K
High School Proportional Segments Theorem
  • · Replies 11 ·
Replies
11
Views
6K
MHB Difference between distance from two fixed points is a positive constant
  • · Replies 7 ·
Replies
7
Views
11K
High School Dividing with Units: An Introduction to Math Problem Solving
  • · Replies 15 ·
Replies
15
Views
9K
MHB Show the trigonometric equation has no solutions
  • · Replies 1 ·
Replies
1
Views
1K
MHB How can I continue,in order to show that 2^b-1 does not divide 2^a+1?
  • · Replies 2 ·
Replies
2
Views
2K