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1d
answered Set of numbers which can not be represent as $a_1^n+a_2^n+…a_n^n$
Mar
13
asked Population average age decreases with births AND deaths (kind of)?
Feb
28
answered Deriving the Area of a Sector of an Ellipse
Feb
27
answered How to calculate ellipse sector area *from a focus*
Feb
23
answered Evaluating $\int_a^b \frac12 r^2\ \mathrm d\theta$ to find the area of an ellipse
Feb
1
answered Why is this coin-flipping probability problem unsolved?
Dec
10
asked Best fit circle to “planetary” elliptical orbit?
Nov
30
asked Show equation has at most two solutions on (0,2*Pi)
Nov
15
asked Determine angle from radius of curvature
Nov
13
asked Stumped by Common Core math problem
Sep
7
asked Simple formulas rotating Earth around xyz axes?
Sep
7
asked Map Earth surface so straight line distance is great circle distance?
Sep
6
answered Why do you add +1 in counting test questions?
Aug
26
asked How do I estimate log10 of log10 of 8 billionth element of A000670?
May
13
answered Parametric Equation for Great Circle
Apr
16
asked Domino's thin crust slicing area sans calculus (circle in squares)
Feb
18
asked Find angle in secant/chord diagram
Jan
16
answered Why do the reals need to be constructed? Do they somehow “span” the rationals, the roots, and the transcendentals like e and pi?
Jan
16
answered Number Theory and Congruency
Sep
12
asked What technique reduces factorable ax^2+bx+c=0 to factorable where a=1