Thank you, it worked. 

@Carl Love 

Thanks for your comment.

But i need to solve analytic solution. Not numeric solution.

What it can not solving this equation by analytically? 

Because i know maple can solve 2.order equations analytically. 

@mehdi jafari May u please upload your last mw program?I coulnt manage to work it by copying and passing. Thanks also for the link. 

@ilke 

@mehdi jafari I have a one question.U plot X(x).(in your terms x is t)  But what if i want to plot W(x,t)=X(x)*T(t)

I got X(x) results from numerical solution. 

T(t) is i found from analytical ways from my another equation. 

T(t)=-6.643572696*10^(-10)*cos(10733.58723*t)-0.8085449658e-4*cos(323.6693795*t)+0.8085516082e-4

T(t) is depend on t. So W(x,t) is showing the deplacement of a beam with changing time. How i can plot W(x,t)? This has to be something like that. If i can get equation of X(x) from numerical(I mean i am making out, X(x)=9*X^2 then i know T(t). I can plot this one. But with numerical result plus analytical solution , i dont know how to plot.Can u have any idea ?  

@mehdi jafari Thanks a lot for your interest. 

@ilke When i have something including complex numbers, so i will use numeric. Thanks for your answer. 

@mehdi jafari That means i can not find it from analytic ways? Thays why , u wrote numeric ? 

@mehdi jafari 

@Carl Love This one I added lastly to try to solve the equation. Because i coulnt solve with 4 boundry conditions. I delete the last derivative. Nothing is changing not giving me any results.ı uploaded again with 4 boundry conditions.  beamsolving(thick.mw

@Carl Love 

Thanks for your interest. I correct{} this .But when i did dsolve({bs[1..5]} union sys1); , it gaves me equation inclucing C6, I ,t.  From above, i have 6 unkowns and 7 data(knowing) , i am supposed to solve but it is not solving. I tried to add, delete boundary conditions but doesnt matter. 

This is just some of it. What i got, when i did , dsolve({bs[1..5]} union sys1);

u(t) = (104999999/100821000000)*((3*I)*sqrt(1+sqrt(4801))*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/4)-3*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/4)*sqrt(-1+sqrt(4801))+(4*I)*sqrt(4801)*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4)+(2*I)*sqrt(1+sqrt(4801))*sqrt(4801)*sqrt(-1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)-(8*I)*sqrt(4801)*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)+(2*I)*sqrt(1+sqrt(4801))*sqrt(4801)*sqrt(-1+sqrt(4801))+(2*I)*sqrt(1+sqrt(4801))*(-1+sqrt(4801))^(3/2)*(exp(sqrt(-1+sqrt(4801))))^(3/2)+(2*I)*sqrt(1+sqrt(4801))*sqrt(-1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)-(14403*I)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(2*I)*sqrt(1+sqrt(4801))*(-1+sqrt(4801))^(3/2)-(2*I)*sqrt(1+sqrt(4801))*sqrt(-1+sqrt(4801))-14403*(exp(sqrt(-1+sqrt(4801))))^(3/4)*sqrt(-1+sqrt(4801)))*(-1+sqrt(4801))*sqrt(4801)*exp(-(1/20)*sqrt(-1+sqrt(4801))*t)/(-(4801*I)*sqrt(1+sqrt(4801))+I*sqrt(4801)*sqrt(1+sqrt(4801))+4801*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(-1+sqrt(4801))+sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(-1+sqrt(4801))+(19204*I)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(4801*I)*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(1+sqrt(4801))-sqrt(4801)*sqrt(-1+sqrt(4801))-4801*sqrt(-1+sqrt(4801))+I*sqrt(4801)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)-(4*I)*sqrt(1+sqrt(4801))*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/4)+(2*I)*sqrt(1+sqrt(4801))*sqrt(4801)*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(9602*I)*sqrt(1+sqrt(4801))*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4))+(1/484041621000000)*(-483940800000000*_C6+483940800000000*_C6*(exp(sqrt(-1+sqrt(4801))))^(3/2)+7260624245851197*(exp(sqrt(-1+sqrt(4801))))^(3/4)*sqrt(-1+sqrt(4801))+(403284000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(4801)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(100821000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(1+sqrt(4801))-(1008209990398*I)*sqrt(1+sqrt(4801))*sqrt(4801)*sqrt(-1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)+(100821000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)+(4032839961592*I)*sqrt(4801)*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)+(1512314985597*I)*sqrt(1+sqrt(4801))*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(201642000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(4801)*sqrt(1+sqrt(4801))*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(100821000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(4801)*sqrt(1+sqrt(4801))-(7260624245851197*I)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(403284000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)+(1008209990398*I)*sqrt(-1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(1+sqrt(4801))-(1008209990398*I)*sqrt(1+sqrt(4801))*sqrt(4801)*sqrt(-1+sqrt(4801))+1512314985597*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/4)*sqrt(-1+sqrt(4801))+(100821000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))+(1008209990398*I)*(-1+sqrt(4801))^(3/2)*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(1+sqrt(4801))-(2016419980796*I)*sqrt(4801)*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(1008209990398*I)*sqrt(1+sqrt(4801))*sqrt(-1+sqrt(4801))+(201642000000*I)*_C6*sqrt(-1+sqrt(4801))*sqrt(1+sqrt(4801))*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(1008209990398*I)*(-1+sqrt(4801))^(3/2)*sqrt(1+sqrt(4801)))*(-1+sqrt(4801))*sqrt(4801)*exp((1/20)*sqrt(-1+sqrt(4801))*t)/(-(4801*I)*sqrt(1+sqrt(4801))+I*sqrt(4801)*sqrt(1+sqrt(4801))+4801*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(-1+sqrt(4801))+sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(-1+sqrt(4801))+(19204*I)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(4801*I)*(exp(sqrt(-1+sqrt(4801))))^(3/2)*sqrt(1+sqrt(4801))-sqrt(4801)*sqrt(-1+sqrt(4801))-4801*sqrt(-1+sqrt(4801))+I*sqrt(4801)*sqrt(1+sqrt(4801))*(exp(sqrt(-1+sqrt(4801))))^(3/2)-(4*I)*sqrt(1+sqrt(4801))*sqrt(4801)*(exp(sqrt(-1+sqrt(4801))))^(3/4)+(2*I)*sqrt(1+sqrt(4801))*sqrt(4801)*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4)-(9602*I)*sqrt(1+sqrt(4801))*exp(-(3/4*I)*sqrt(1+sqrt(4801)))*(exp(sqrt(-1+sqrt(4801))))^(3/4))

Additionally, If forgot to say , this is a 2 nonlinear diferantial equation solving...u(t) and w(t) are the equations. There are 4th derivative of w , and 3rd derivative of u(t)....

I found it .I am using a turkish version of windows 7.Mapplesoft already found the error.  http://www.maplesoft.com/support/faqs/detail.aspx?sid=34802 Thanks a lot. 

Hi, 

I have the same problem.My system windows 7, 64 bit. I uploaded maple 15,16,17 . It is not working properly. Maple is not giving a error .I can make plus, minus, / , *. Except this things, i can not make differantial, intergral etc. When i want to make d/dx (x) , it is not giving results. I think, the issue is about symbolic work.My adviser wants me to learn this program and i couldnt figure it out how to download. Please help me. I really google a lot .