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New posts in problem-solving
Show me some pigeonhole problems [closed]
combinatorics
problem-solving
big-list
pigeonhole-principle
Prove $|a+b|+|a-b| \geq |a|+|b|$
inequality
proof-writing
problem-solving
Probability of event with repetition [closed]
probability
probability-distributions
problem-solving
Trying to apply mathematics into a real-life context
trigonometry
problem-solving
Two fluids flowing perpendicular in thermal contact with a Wall [Help to mathematically model]
ordinary-differential-equations
partial-differential-equations
problem-solving
mathematical-modeling
laplacian
Finding number of distribution without using computer algorithm
combinatorics
permutations
combinations
problem-solving
Teaser or fun calc equation to surprise husband (physicist/EE) at work
calculus
multivariable-calculus
soft-question
problem-solving
proof-verification
Show divisibility by 7
elementary-number-theory
divisibility
problem-solving
pythagorean-triples
Prove that this particular sequence contains an infinite number of sixes
sequences-and-series
recurrence-relations
problem-solving
Extraneous solution when solving $x^2+x+1=0$ by getting $x^2=1/x$
algebra-precalculus
problem-solving
An Integral involving $e^{ax} +1$ and $e^{bx} + 1$
integration
problem-solving
Why aren't these two solutions equivalent? Combinatorics problem
combinatorics
discrete-mathematics
problem-solving
Find a bug under 6 tiles
problem-solving
Solving $\sqrt{7x-4}-\sqrt{7x-5}=\sqrt{4x-1}-\sqrt{4x-2}$
algebra-precalculus
problem-solving
roots
factoring
Maximum of $a_1 \cdot a_2 \cdots a_n$ given $a_1 + \cdots + a_n = 1000$?
algebra-precalculus
inequality
problem-solving
Prove that $\sqrt{n} \le \sum_{k=1}^n \frac{1}{\sqrt{k}} \le 2 \sqrt{n} - 1$ is true for $n \in \mathbb{N}^{\ge 1}$
inequality
induction
problem-solving
natural-numbers
Induction Proof: Formula for Sum of n Fibonacci Numbers
induction
proof-writing
problem-solving
fibonacci-numbers
Is "problem solving" a subject to be taught?
reference-request
problem-solving
education
How do you create a nonlinear game that the player can always win?
computer-science
problem-solving
game-theory
algorithmic-game-theory
Probability question involving throwing a die until we get a certain result
probability
problem-solving
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