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 1d asked Continuity Rewritten: $\forall\delta>0,\exists\varepsilon>0\dots$ Mar22 answered What was the book that opened your mind to the beauty of mathematics? Feb19 answered Robot on a grid. Find if it can reach a certain position. Feb19 asked The $8$-Puzzle and $2$-Cycles Jan16 asked Are all functions $f:\mathbf{Z}\to\mathbf{Z}$ “continuous”? Nov27 asked Derivation of Simple Projectile Motion with Drag Aug19 answered Assumptions in Word Problems (Calculus) Jun13 answered What was the book that opened your mind to the beauty of mathematics? Dec2 asked Best Sum of Three Elements in a Sequence Nov25 answered Calculus 1 - Optimization Cylinder Nov4 asked Largest Difference of Two Numbers in an Array Oct29 answered Confusion with displacement of parabolas. Oct29 asked Trigonometry: Isosceles Triangle Oct28 answered The question about the word of “Mathematics”. Oct28 answered Project Euler's Problem Number 88 Oct23 asked Project Euler's Problem Number 88 Oct15 answered Let $R$ a ring prove that $x(y-z)=xy - xz$ Oct15 answered What is the meaning of $\frac{0}{0}$? Oct7 answered Find an equation of the tangent line to the curve $y=x^3-3x+1$ at the given point $(2,3)$ Sep30 answered Permutation vs Combination