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Cristian Rodríguez's user avatar
Cristian Rodríguez's user avatar
Cristian Rodríguez's user avatar
Cristian Rodríguez
  • Member for 9 years, 10 months
  • Last seen more than 1 year ago
  • Tunja, Colombia
7 votes
3 answers
382 views

Why do I get two different results for the reciprocal of $i$?

3 votes
0 answers
880 views

Wave equation for a string nonuniform (PDE)

3 votes
1 answer
2k views

Probabilities in a game with six dice

3 votes
1 answer
77 views

Showing $y_1$ or $y_2$ are not polynomials

3 votes
2 answers
14k views

Prove that $\int_{-1}^1P_n^2(x)dx=\frac{2}{2n+1}$, where $P_n(x)$ is a Legendre polynomial.

2 votes
1 answer
507 views

Prove this relation for the legendre polynomials

1 vote
1 answer
303 views

Solving the equation of damped oscillator

1 vote
1 answer
87 views

How to prove that this equality is the development of a fourier series?

1 vote
2 answers
2k views

how to solve the system of differential equations for this particle?

0 votes
1 answer
3k views

how to prove that $\cos n\pi=(-1)^n$?

0 votes
2 answers
141 views

Why write the solution of the harmonic oscillator form 1 is equal to writing form 2?

0 votes
1 answer
53 views

How to solve this integral equation, where the unknown function appears within another function.