### Questions (36)

 16 How do we know $\sin$ and $\cos$ are the only solutions to $y'' = -y$? 4 Definition of subsequence used in defining accumulation points 4 How can a power series with n in the denominator converge? 3 For the purposes of DFT, is “the” primitive root of unity $w_n = e^{ 2\pi i / n }$ or $w_n = e^{-2\pi i / n }$? 3 Best straight-line approximation for $\sin(2x)$ on $(-\pi,\pi)$

### Reputation (734)

 +10 Line integral of vector field using polar coordinates +10 Line search using secant method +10 Generate random points on perimeter of ellipse +10 Sufficiency of KKT in nonconvex case

 2 Best upper and lower bound for a binomial coefficient 0 How to generate points uniformly distributed on the surface of an ellipsoid? 0 Proof that $\xi^*(b)$ is concave for arbitrary b in a linear program

### Tags (47)

 2 binomial-coefficients 0 convex-analysis × 4 2 factorial 0 matrices × 3 2 upper-lower-bounds 0 multivariable-calculus × 3 0 linear-algebra × 10 0 optimization × 3 0 statistics × 6 0 probability-distributions × 3

### Bookmarks (16)

 52 How the product of two integrals is iterated integral? $\int\cdot \int = \iint$ 8 Finding the maximum value of $\int_0^1 f^3(x)dx$ 6 Distribution of the sample mean of a exponential 6 Partial derivative of a composite function 6 Moment of inertia of a sphere