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Jan
22
answered Is sequence $x_1=3, x_{n+1}=\frac{x_n}{2}-\frac{2}{x_n}$ bounded?
Nov
15
answered Sketch $\dot x =x-y$, $\dot y= x+y$ on a phase portrait.
Nov
12
answered Invariance of phase portrait with respect to rotations
Nov
9
answered If $E[X|Y]=Y$ almost surely and $E[Y|X]=X$ almost surely then $X=Y$ almost surely
Nov
8
answered Drawing a phase portrait. What is the indisputable way of doing this?
Oct
28
answered System of ordinary differential equations
Oct
18
answered Phase portraits
Oct
17
answered Providing initial conditions for differential equation? - Phase portrait
Aug
19
answered Find the general solution and draw the phase portrait
Jun
27
answered Lotka-Volterra equations modified
Jun
27
answered Interpreting phase-plane portraits
Jun
26
answered Solving $2^x - 3^x + 6^x =0$.
Jun
21
asked Periodic orbits of “even” perturbations of the differential system $x'=-y$, $y'=x$
Jun
21
answered Trapping region for $\ddot x + (x^2-2) \dot x + x + \sin(x) =0$
Jun
20
answered Analyzing the singularity of ODE system
Jun
13
answered Convexity of the ratio of the standard normal PDF by its CDF
Jun
12
answered Show that the first quadrant of a dynamical system is invariant.
Jun
12
answered Vandermonde's Identity : Summations with binomial coefficients
Jun
3
answered Using the symmetry assumption in this familiar probability problem
Jun
1
answered Finding a Lyapunov function for a given system