hi

i write following code that solve ordinary differential equation. but its not good enough. because when in loop it want to integrate equation it takes too long for many problems. i wants you to help me to solve this problem. i think maybe its better to solve with numerical but i cant. its really important for me and thancks for your help. I bold that section.

restart:
equ:=diff(u[i](x),x$3)+(1/2)*diff(u[i](x),x$2)*u[i](x)+(2*m1/(m1+1))*(1-diff(u[i](x),x$1)^2):

hi

i want to solve following equation

f(s)=a+b*s+c*s^2

with these condition

f(0)=0

f'(0)=0

f'(5)=1

please help me

thancks

hi,

please Help me in the following code :

> restart;
i:=0;
             
u[i](s):=A+B*s-C*exp(-s);
              
lambda(s,x):= -(1/2)*(s-x)^2;
                    

tre(s,x):=lambda(s,x)*(diff(u[i...

hi,

i want to solve this equation :

f(n+1)(x)=f(n)(x)-int [ (s-x)^2 * ( F"(n)(s)+.5*F(n)(s) ) ds]

 integration is from  -infinity  to  x

with this initial guess   f(0)(x)=A+Bx+C*exp[-x]

i want for example F(4)(x) in terms of A,B,C

 and then calculate A,B and C with this condition

f(0)(4)=0

f'(0)(4)=0

f'(10)(4)=1

please help me

thancks

hi, i cant solve the following ODE and Boundary conditions in maple. please help me. i use dsolve and ode analyser but i cant receive and conclusion. thanks.

restart:
#beta:=.01;
#lambda:=.3;
s:=f(x)^2*diff(f(x),x,x)+x*f(x)*(1-2*beta)+beta*diff(f(x),x)*(x^2-1);
 
bcs:=f(1)=0,D(f)(-lambda)*f(-lambda)=beta*(lambda^2-1);