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joejacobz
  • Member for 11 years, 1 month
  • Last seen more than 5 years ago
  • New York, United States
8 votes
3 answers
19k views

What are the real-world applications of real analysis?

16 votes
3 answers
10k views

Cyclic sums -- How do you use them?

6 votes
7 answers
9k views

Why isn't the derivative of $e^x$ equal to $xe^{(x-1)}$?

5 votes
1 answer
5k views

"The Original IQ Test" -- A peg puzzle

3 votes
4 answers
4k views

What is the value of $i^i$? [duplicate]

22 votes
5 answers
3k views

Is high school contest math useful after high school?

12 votes
1 answer
2k views

Finding $x^4 + y^4 + z^4$ using geometric series

11 votes
2 answers
1k views

Fermat's Last Theorem's Proof

3 votes
2 answers
1k views

Contest Math Geometry

2 votes
1 answer
729 views

Prove $n!>2^n$ for $n\geq4$ using induction. [duplicate]

1 vote
0 answers
413 views

What do I need to know to understand Lagrange multipliers?

1 vote
0 answers
154 views

Tangents to an ellipse