### Answers (439)

 123 $\epsilon$-$\delta$ proof that $\lim\limits_{x \to 1} \frac{1}{x} = 1$. 47 What is the difference between “expectation”, “variance” for statistics versus probability textbooks? 36 A proof of the product rule using the single variable chain rule? 30 How to algebraically solve $\frac{1}{x} < 5$ inequality to obtain two solutions? 14 Probability of the union of $3$ events?

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 +10 How to find the closed form formula for $\hat{\beta}$ while using ordinary least squares estimation? +10 Big $O$, little $o$ Notation +10 Notations regarding Random Variables. +10 If $K \leq H \leq G$, show that $[G:K] = [G:H][H:K]$.

### Questions (254)

 19 When are graphs deceiving? 15 What is the purpose of Jordan Canonical Form? 12 If $K \leq H \leq G$, show that $[G:K] = [G:H][H:K]$. 10 A better resource for vector calculus than Stewart? 9 Big $O$, little $o$ Notation

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 270 probability × 213 126 epsilon-delta × 4 179 real-analysis × 58 117 probability-distributions × 92 176 limits × 33 95 probability-theory × 74 165 calculus × 96 70 soft-question × 7 161 statistics × 116 55 integration × 44

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