johnny

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17 Answers

newest activity votes

16

Why did my friend lose all his money?

aug 28 at 8:59

13

Prove $\sqrt[3]{60}>2+\sqrt[3]{7}$

oct 4 at 9:51

8

Why can 2 uncorrelated random variables be dependent?

dec 2 at 20:14

5

A “fast” way to manually compute $3^{41}+7^{41} \pmod{13}$

jul 6 '11 at 15:13

4

Prove that $x^2 + 5xy+7y^2 > 0$ for all $x,y \in\mathbb{R}$

sep 9 at 20:14

4

Probability game with three players winning plus losing doesn't equal 1

aug 3 '11 at 13:29

3

Matlab code for generating random symmetric positive definite matrix

apr 11 at 8:18

3

Calculate the good Paypal fees

oct 19 at 10:37

2

real analysis true/false questions

sep 5 at 18:36

2

Probability, lottery. Once a week for 30 years, probability of winning at least once?

jul 14 '11 at 11:26

2

approximation of $\frac{6\ln 10}{\ln 2}$?

jun 29 '11 at 15:23

2

Learning mathematics as if an absolute beginner?

jun 28 '11 at 23:44

1

Good books on “advanced” probabilities

dec 2 at 22:10

1

Numerically evaluating the limit of $\frac{x^4-1}{x^3-1}$ as $x\rightarrow 1$

aug 30 at 0:53

1

Motivating linear algebra for economics students?

jul 9 '11 at 6:50

0

Factoring and Exponent rules using “n” notation tripping me up

jul 11 '12 at 11:22

0

Solve: $|-(x + 1)^2+1|\geq 1$

jul 11 '12 at 9:51

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