Differential functional equation
111789
Solving functional differential equation $f'(x)=2f(2x)-f(x)$
85386
Differential equation $y''=\frac{y'}{2\sqrt y}$
88683
Functional equation $f\left(\frac{x+y}{2}\right)+f\left(\frac{2xy}{x+y}\right)=f(x)+f(y)$ implies $2f(\sqrt{xy})=f(x)+f(y)$
15820
Discontinuous linear functional
104278
Finding function $f(x)$ which satisfy given functional equation
121547
Differential equation for Harmonic Motion
158893
Separable Differential Equation
76508
Differential Equations: solve the system
121381
Finding solution of non linear DE $x\ddot{x}-\dot{x}^2=1$
120170
A late-diverging "approximating solution" for a system of functional equations
148227
Rewriting of functional equation $f(xy)=f(x)+f(y)$
72604
The differential equation $y''-q(x)y=0.$
143313
Maximal solution differential equation
77071
Solve the functional equation $f(xy) = f(x)f(y) - f(x + y) + 1$ and $f(1) = 2$
147195
Help needed in finding the value of $f(2001)$ in the given functional equation
32599
Solution to the functional equation $f(x^y)=f(x)^{f(y)}$
20568
Does the following have a solution for f(x,y)?