List questions from mathematical-astronomy

Published on 25 Mar 2026 - 6:11

89

Views

Is there a way to solve $x\left(\frac{e^x+1}{e^x-1}\right)=4$ for x besides just plugging numbers in?

Published on 25 Mar 2026 - 6:12

165

Views

Is $\frac{\arccos\left((\sqrt{r}+1)/(r+1/\sqrt{r})\right)}{\pi \left|1-r^{-3/2}\right|}$ analytic at $r=1$?

Published on 25 Mar 2026 - 6:13

60

Views

Determining what to multiply each number in a set by so that their sum equals 100?

Published on 25 Mar 2026 - 6:11

365

Views

Integration of Tsiolkovsky rocket equation with gravity

Published on 25 Mar 2026 - 6:11

988

Views

Seasonal changes in hours of daylight

Published on 06 Apr 2026 - 5:59

1.1k

Views

How to prove the Hubble law is the unique expansion law compatible with homogeneity and isotropy?

Published on 25 Mar 2026 - 6:13

664

Views

Angular momentum of an accretion disk

Published on 25 Mar 2026 - 6:10

373

Views

Solving a differential equation numerically to plot particle path

Published on 25 Mar 2026 - 7:38

1.1k

Views

Right ascension / Declination of a satellite

Published on 27 Mar 2026 - 9:07

179

Views

Two body problem (rotation around a fixed central point)

Published on 25 Mar 2026 - 6:09

678

Views

Solving Kepler's second law

Published on 11 Apr 2026 - 0:30

175

Views

overlap between orbitting planets

Published on 27 Mar 2026 - 12:18

50

Views

Orbital Motion overlap

Published on 10 Apr 2026 - 10:10

4.9k

Views

Angular Velocity around an ellipse

Published on 27 Mar 2026 - 8:40

List Question

Integration of (Tsiolkovsky) rocket equation with external forces

Is there a way to solve $x\left(\frac{e^x+1}{e^x-1}\right)=4$ for x besides just plugging numbers in?

Is $\frac{\arccos\left((\sqrt{r}+1)/(r+1/\sqrt{r})\right)}{\pi \left|1-r^{-3/2}\right|}$ analytic at $r=1$?

Determining what to multiply each number in a set by so that their sum equals 100?

Integration of Tsiolkovsky rocket equation with gravity

Seasonal changes in hours of daylight

How to prove the Hubble law is the unique expansion law compatible with homogeneity and isotropy?

Angular momentum of an accretion disk

Solving a differential equation numerically to plot particle path

Right ascension / Declination of a satellite

Two body problem (rotation around a fixed central point)

Solving Kepler's second law

overlap between orbitting planets

Orbital Motion overlap

Angular Velocity around an ellipse

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