Error when solving ODE system

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Question:Error when solving ODE system

Posted: iman 35 Product: Maple 2015

April 27 2016

hi.please see attached file below and help me.thanksode.mw

PDE[111] := 1.00000000000000*(diff(u(x), x, x))-0.149999325000000e-2*(diff(phi(x), x, x))-6.75000000000000*10^(-9)*(diff(w(x), x, x, x))-5.00000000000002*u(x)*omega^2-9000.00000000004-9000.00000000004*x-9000.00000000004*u(x)+1.00000000000000*sin(x)*(1+sin(1))/cos(1)+1.00000000000000*cos(x)+15.0000000000001*omega^2*(sin(lambda*x)*(1+sin(lambda)*h*lambda)/(lambda*cos(lambda))+cos(lambda*x)*h-h-x):

PDE[222] := -0.359993520064131e-5*(diff(u(x), x, x, x))+3.99996400064778*(diff(phi(x), x))+1329.30936957021*(diff(w(x), x, x))+.999982008672136*(diff(phi(x), x, x, x))+1.00000000000000*(diff(w(x), x, x, x, x))+2666.61866714172*omega^2*w(x)-0.359993520064131e-5*cos(x)*(1+sin(1))/cos(1)+0.359993520064131e-5*sin(x):

PDE[333] := -.798732818366946*(diff(u(x), x, x))+5320.91569986492*phi(x)+3.99371800712488*(diff(w(x), x))+1.00000000000000*(diff(phi(x), x, x))+.998420524331735*(diff(w(x), x, x, x))-2662.45470893602*omega^2*phi(x)-.798732818366946*sin(x)*(1+sin(1))/cos(1)-.798732818366946*cos(x):

dsys3 := {PDE[111], PDE[222], PDE[333], phi(0) = 0, u(0) = 0, w(0) = 0, (D@@1)(phi) = 1, ((D@@1)(u))(1) = 0, ((D@@1)(w))(0) = 0, ((D@@2)(w))(1) = 0, ((D@@3)(w))(1) = 0}:

(1)

Error, invalid input: subs received res[indx[1]](1), which is not valid for its 1st argument

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