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khaverim
  • Member for 11 years, 5 months
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24 votes
19 answers
3k views

How to understand why $x^0 = 1$, where $x$ is any real number?

8 votes
2 answers
262 views

proof for $\frac{1}{i} = -i$?

4 votes
6 answers
292 views

Evaluate $ \int_{1}^{\infty} \frac{\sqrt{x - 1}}{(x + 1)^{2}} ~ \mathrm{d}{x} $.

3 votes
3 answers
21k views

How to define a plane based on 4 points

2 votes
2 answers
728 views

Show $\int_{0}^{\infty} \frac{x^{-z}}{(1 + x)^{2}} ~ \mathrm{d}{x} = \frac{\pi z}{sin(\pi z)}$

2 votes
1 answer
70 views

Show, for a sphere, $\langle r^2\rangle = \frac{3}{5}r_o ^2$

2 votes
1 answer
392 views

Does $n\log(n)$ diverge or converge from this sum of quotients?

1 vote
1 answer
429 views

Boundary condition as $\lim_{x\rightarrow\infty} y(x) = 0$ for hermite differential equation solution?

1 vote
1 answer
1k views

Ladder (recurrence) operators for Hermite polynomials?

1 vote
1 answer
4k views

Use fourier transform to solve second-order differential equation -- an "easy" integral?

0 votes
0 answers
42 views

Is this superscript notation correct?

0 votes
1 answer
88 views

How many ways to arrange 10 values in a vector of length 50?

0 votes
1 answer
249 views

Sign flip for every TWO terms in a sum? (Instead of one)