Why we can not define the solution of the differential equation beyond a particular $t$?
136022
Why can't a union of two intervals be the maximum existence interval of a solution?
65077
Differential Equations, unique solution
101852
Differential equations that are also functional
112783
Is it mathematically valid to separate variables in a differential equation?
43430
What exactly does $\frac{dx}{dy}$ mean?
27646
Why do we chose exponential function as a trial solution for second order linear differential equation with constant coefficient?
57875
Derivative of function solved from NDSolve can't be plotted
152293
Solution of $y''+xy=0$
107620
Determining stability of the differential equation
48309
What kind of functions cannot be described by the Taylor series? Why is this?
55188
Second order ODE - why the extra X for the solution?
157504
What type of differential equation is $f'(x) = f(x/2)$ and how do you solve it?
38003
Can we differentiate equations without changing the solutions?
72604
The differential equation $y''-q(x)y=0.$
88137
$y''-2y'+y=te^t$ by method of undetermined coefficients
79212
Find the general solution of $y'= a^{x + y}$ where y is the function
142821
Why?$\int_0^1\int_{u(t)}^{u(t)+w(t)} f(t,v(t)) dv dt = \int_0^1 f(t,u(t)+\theta w(t))w(t) dt; ~~\theta\in[0,1] $