Error in dsolve/numeric/bvp

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Question:Error in dsolve/numeric/bvp

Posted: John Eric 80 Product: Maple

November 25 2016

Hello every one ;

i have these flowing error :

(1)

(diff(diff(psi(u), u), u))/cosh(2*u)

(2)

(diff(diff(diff(diff(psi(u), u), u), u), u))/cosh(2*u)-4*(diff(diff(diff(psi(u), u), u), u))*sinh(2*u)/cosh(2*u)^2+8*(diff(diff(psi(u), u), u))*sinh(2*u)^2/cosh(2*u)^3-4*(diff(diff(psi(u), u), u))/cosh(2*u)+2*(diff(diff(diff(psi(u), u), u), u))/cosh(2*u)-4*(diff(diff(psi(u), u), u))*sinh(2*u)/cosh(2*u)^2+(diff(diff(psi(u), u), u))*(4+10.000000000000000000*3^(1/2)*(diff(psi(u), u)))/cosh(2*u)