Question: Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system

how I can dsolve these equations?

thanks.

Boundary conditions are:

u(0) = 0, u(0.1e-2) = 0, w(0) = 0, w(0.1e-2) = 0, (D(w))(0) = 0, (D(w))(0.1e-2) = 0

error masseage:

Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system
 

error.mw
 

dsys3 := {1.857142857*10^11*(diff(u(x), x, x)), 1.547619048*10^10*(diff(w(x), x, x, x))-1.300000000*10^11*(diff(w(x), x)), -1.300000000*10^11*(diff(w(x), x, x))+3.541600000*10^(-13)*(1.082793750-81250.00*w(x))/(1.019000000*10^(-6)-w(x))^2+1.040549102*10^(-32)/(1.019000000*10^(-6)-w(x))^4-2.124960000*10^(-15)*(1.082793750-81250.00*w(x))*(diff(w(x), x))^2/(1.019000000*10^(-6)-w(x))^4+1.151020000*10^(-10)*(diff(w(x), x))^2/(1.019000000*10^(-6)-w(x))^3-7.083200000*10^(-16)*(1.082793750-81250.00*w(x))*(diff(w(x), x, x))/(1.019000000*10^(-6)-w(x))^3+2.877550000*10^(-11)*(diff(w(x), x, x))/(1.019000000*10^(-6)-w(x))^2-2.081098205*10^(-34)*(diff(w(x), x))^2/(1.019000000*10^(-6)-w(x))^6-4.162196410*10^(-35)*(diff(w(x), x, x))/(1.019000000*10^(-6)-w(x))^5, u(0) = 0, u(0.1e-2) = 0, w(0) = 0, w(0.1e-2) = 0, (D(w))(0) = 0, (D(w))(0.1e-2) = 0, ((D@@2)(w))(0) = 0, ((D@@2)(w))(0.1e-2) = 0}; dsol5 := dsolve(dsys3, numeric, abserr = 0.1e-1, output = array([.5]))

Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system

 

``

 

Download error.mw

 

Please Wait...