### Answers (43)

 2 Finding a random position in the unit circle 2 Given that $\binom{16}r =\binom{16}{2r + 1}$, what is the value of $r$? 2 Request for crazy integrals 2 When I complete the square on $3x^2 - 12x + 14$ I get an imaginary number, where have I gone wrong? 2 Connection between the spectra of a family of matrices and a modelization of particles' scattering?

### Reputation (552)

 +10 Connection between the spectra of a family of matrices and a modelization of particles' scattering? -2 Summation using previous sum inside the sigma +10 Comparison of the Sizes Arbitrarily Generated Compound Exponential Numbers +5 An Integral Designed to be on the Very Cusp of Convergence

### Questions (26)

 12 Showing $\int_0^{\int_0^u{\rm sech}vdv}\sec vdv\equiv u$ and $\int_0^{\int_0^u\sec vdv}{\rm sech} vdv\equiv u$ 5 An Integral Designed to be on the Very Cusp of Convergence 4 Rutherford's $\alpha$-Particle Scattering Experiment 3 Combinatorial Proof that the Logarithm of a Product is the Sum of the Logarithms 3 Sum of Itemwise Products of Two Sets of Real Numbers

### Tags (81)

 5 integration × 9 2 combinatorics × 3 3 calculus × 7 2 binomial-coefficients × 3 3 definite-integrals × 3 2 geometry × 3 3 mathematical-physics × 3 2 cubic-equations 2 probability-distributions × 3 2 eigenvalues-eigenvectors

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