Mlazhinka Shung Gronzalez LeWy
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 16 Who realized $\int \frac 1x dx =\ln(x)+c$? 14 Dimension of $\mathbb{Q}\otimes_{\mathbb{Z}} \mathbb{Q}$ as a vector space over $\mathbb{Q}$ 12 For polynomial $f$, does $f$(rational) = rational$^2$ always imply that $f(x) = g(x)^2$? 11 ring without zero-divisors 9 find all rational functions $f(x)$ such that $(f(x))^2-f(x^2)=constant$,

### Reputation (4,647)

 +10 Proving Binomial Idenity without calculus +10 Partial Fractions Theorem Proof +10 Transform quadratic ternary form to normal form +10 Dimension of $\mathbb{Q}\otimes_{\mathbb{Z}} \mathbb{Q}$ as a vector space over $\mathbb{Q}$

### Questions (3)

 6 A little fun with tournaments (graphs). 4 If $f$ is $C^{\infty}$ and $f^2$ is analytic, then $f$ is analytic. 2 Pieces of divergent series divertimento.

### Tags (137)

 67 calculus × 36 26 algebra-precalculus × 12 67 abstract-algebra × 19 25 real-analysis × 15 40 integration × 12 23 limits × 9 29 polynomials × 17 22 functions × 10 27 sequences-and-series × 14 22 ring-theory × 5

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