restart;with(Statistics):

MartinPoisson := (p/((p+2*q*T)/(1+p*T+q*T^2)-(p*T+q*T^2)*(p+2*q*T)/(1+p*T+q*T^2)^2))^r*r^2*T^n/factorial(n);

Dist := subs(T=t,MartinPoisson) assuming t > 0;

MartinDist := Distribution(CDF = unapply(piecewise(t>1,Dist,0),t));

MartinDist := Distribution(CDF = unapply(Dist, t)) assuming t > 0; #Change 2

X:=RandomVariable(MartinDist);

MartinDensity := PDF(X,t);

MartinDensity := subs(t=x, MartinDensity);

i copy from notepad, it do not have line return, so i copy to MS WORD and copy here from MS WORD

but some characters missing, if there is some missing please tell me, it seems old web page is better

code and error here

https://skydrive.live.com/redir?resid=E0ED7271C68BE47C!351

restart;with(LinearAlgebra):

f:=[x3-x2^3,-x2,x1^2-x3]:

with(Physics):

u := subs(x3=x3(t),subs(x2=x2(t),subs(x1=x1(t),u)));u := -Physics[`*`](Physics[`*`](Physics[`*`](3, Physics[`^`](conjugate(x2(t)), 2)), x2(t))+Physics[`^`](x1(t), 2)-x3(t), Physics[`^`](1+Physics[`*`](3, Physics[`^`](conjugate(x2(t)), 2)), -1));

u = subs(conjugate(x3(t))=x3(t),subs(conjugate(x2(t))=x2(t),subs(conjugate(x1(t))=x1(t),u)));

would like to remove all conjugate back to normal variable

have a matrix An = [alpha(i,j)]
alpha(i,j) = (j-i+1)*(j-1)!/(i-1)!*a(j-i+1)*x    for j-i >= 0, j - i even

                   0, j-i >= 0, j-i odd,           

                   -1, i-j = 1,             

                    0, otherwise

f describe the horizontal motion

g describe the vertical motion

h := sin(t);    

g := piecewise(t < 0, Diff(x(h),h$2)+2*Diff(x(h),h)+10*x(h), t > 0,Diff(x(h),h$2)-2*Diff(x(h),h)+10*x(h));

dsolve([g,h]);

can not solve

Error, (in unknown) invalid input: diff received sin(t), which is not valid for its 2nd argument

f := sin(m(t));   
g := piecewise(t < 0, Diff(x(m(t...