Pink Elephants

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41 Answers

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62	The $100$th derivative of $(x^2 + 1)/(x^3 - x)$
26	Does $f(x) = f(2x)$ for all real $x$, imply that $f(x)$ is a constant function?
21	How to find $\lim\limits_{x\to0}\frac{e^x-1-x}{x^2}$ without using l'Hopital's rule nor any series expansion?
15	Random point uniform on a sphere
8	Is the number of cosets in $G/H$ dependent only on size of $G$ and $H$?

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2,641 Reputation

+10	Random point uniform on a sphere
+10	Proving $\sum_{i=1}^nx_i-\prod_{i=1}^nx_i\leq n-1$,using induction.
+25	Not primary ideal having a prime radical
+10	How to find $\lim\limits_{x\to0}\frac{e^x-1-x}{x^2}$ without using l'Hopital's rule nor any series expansion?

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3 Questions

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11	A field without a canonical square root of $-1$
8	Homogeneous polynomials in two variables taking integer values
3	Power series identity [duplicate]

55 Tags

131 calculus × 9	27 limit × 3
62 derivatives	17 sequences-and-series × 4
33 real-analysis × 5	16 probability × 3
30 functions × 2	14 probability-distributions
29 functional-equations × 2	12 group-theory × 3

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