Aug11 asked Where can I read about the techniques for computing areas and volumes before calculus? Aug10 asked Is the area of a convex polygon equal to the area of a circle with the same perimeter of the polygon? Jul21 asked Prove the reflexivity of $\subseteq$. Jul20 asked Is there something that studies equivalent forms of writing and expression? Jul16 asked How to turn arbitrary fractions into arbitrary egyptian fractions? Jul13 asked What do we lose by differentiating without using the rules of differential calculus? Jul12 asked Curiosity about Kronecker's Delta? Jul11 asked Does the absence of horizontal lines shows that there are no $n,m\in \mathbb{N}$ such that $n^2=2m^2$? Jul10 asked Differentiating $\frac{te^{\tan t}}{ln(3t+1)}$? Jul8 asked Where can I find introductory video lectures about calculus and analysis? Jun27 asked Are there non-trivial systems of arithmetic in which the order of precedence of the operators does not change the output? Jun27 asked What's the importance of a formula for the real and imaginary parts of a complex number? Jun23 asked Good textbooks and articles from arXiv for undergraduate students? Jun22 asked Introductions to classical and nonclassical logic? Jun14 asked Is there a garden of derivatives? Jun10 asked $\frac{|| \overline{AM}||}{|| \overline{AB}||}=\frac{|| \overline{AN}||}{|| \overline{AC}||}=\frac{|| \overline{MN}||}{|| \overline{BC}||}$ Jun10 asked Is Courant's Introduction to Calculus and Analysis still up-to-date? May27 asked Why to see that $\overline{B}(x;r)$ is closed if it was just defined? May26 asked Are there functions that converge to $P$ when $f:\mathbb{N}\to\mathbb{R}$ and to $Q$ when $f:\mathbb{R}\to\mathbb{R}$ with $Q\neq P$? May26 asked On the thought process for choosing $\epsilon$'s to check the convergence of $(-1)^n$?