# Items tagged with bvpbvp Tagged Items Feed

### ODE's system with an integral

April 22 2013 by

3

5

Hi,

I have to get the numerical solution of a systems of differential equations, but with the particularity of that one of its equations contain an integral. I mean, something like this:

"bc1"...

### error in solving two coupled ode equatio...

December 05 2012 by Maple

1

8

Hi everyone i've tried to solve two coupled nonlinear ode but maple gives me these two errors can you help me with this?

ode1 := diff(f(x), x, x, x)+3*f(x)*(diff(f(x), x, x))-2*(diff(f(x), x))^2+g(x) = 0;
ode2 := diff(g(x), x, x)+(3*10)*f(x)*(diff(g(x), x)) = 0;
bcs1 := (D(f))(0) = 0, f(0) = 0, (D(f))(6) = 0;
bcs2 := g(0) = 1, g(6) = 0;
sys := {bcs1, bcs2, ode1, ode2};
dsn := dsolve(sys, numeric);
print(plots:-odeplot(dsn, [x, g(x)...

### unable to store HFloat

November 08 2012 by Maple 16

0

7

Hello every one,

I am gettting this error "unable to store HFloat", while solving a system of ODES numerically.

restart:

eq1:=n*(-diff(f(eta),eta$2))^(n-1)*diff(f(eta),eta$3)+(2*n/(n+1))*f(eta)*diff(f(eta),eta$2) -diff(f(eta),eta$1)^2-M*diff(f(eta),eta$1)+M*epsilon+epsilon^2+lambda*f1(eta)=0; eq2:=diff(f1(eta),eta$2)+P*(2*n/(n+1))*(f(eta)*diff(f1(eta),eta$1))=0; bc:=f(0)=0,D(f)(0)=1,D(f1)(0)=1,D(f)(N)=epsilon,f1(N)=0; ### got an error, while running the code September 26 2012 by Maple 16 0 2 i got error while running the code. restart; de := diff(f(y), y, y, y, y)+2*W*(diff(f(y), y, y, y))^2+3*(diff(f(y), y, y, y, y))*(diff(f(y), y, y))-(M*M)*(diff(f(y), y, y))+G*(diff(theta(y), y, y))+B*(diff(phi(y), y, y)) = 0, diff(theta(y), y, y)+Nb*(diff(theta(y), y))*(diff(phi(y), y))+Nt*(diff(theta(y), y))^2 = 0, diff(phi(y), y, y)+Nb*(diff(theta(y), y, y))/Nt = 0, f(h1) = (1/2)*F, f(h2) = -(1/2)*F, (D(f))(h1) = -1, theta(h2) = 1, phi(h2) = 1, (D(f)... ### Error in using dsolve dealing with nonlinear... August 17 2012 by Maple 16 1 2 I am dealing with a problem in engineering mechanics, but my when using maple to solve the governing nonlinear equation with 4 bcs, I meet with error.  Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging my code is : deq := diff(y(x), $(x, 4)) = -.364*(diff(y(x), x))^2*(diff(y(x), \$(x, 2)))+1.74*10^(-7)
bc := y(0) = 0, (D(y...

### numerical solution of an ode

June 24 2012 by Maple 15

1

5

Hi dear friends

I want to solve this equation with the foloowing boundary conditions with maple. please help me to solve it

The nonlinear equation is:

F' ' ' +27*F*F' '=0

And boundary conditions are:

F' (6)=0.148

F' (-6)=0

F (-6)=0

### While solving BVP using middefer method,...

March 18 2012 by Maple

0

5

Hello!

I have to  solve following ODE set as a part of my MsC thesis

 Page 1 of 1