Question: How can I solve this ODEs ?? no response when I try to solve it

CODE:

sys_ode := 2*C__5*(diff(w(x), x))-C__1*(diff(u(x), x, x))-2*C__4*(diff(w(x), x, x, x))-Q(x) = 0, 2*C__2*u(x)-C__1*(diff(w(x), x, x, x))-2*C__3*(diff(u(x), x, x)) = 0

ics := (D(u))(0) = 1, ((D@@2)(w))(0) = 0, (D(u))(100) = 1, ((D@@2)(w))(100) = 2

 

NOTE:

C__1 to C__5 are constants. 

Following is the screenshot, is there anything wrong with my code?

Thanks for any answer or suggestion!

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