Hi acer,

I got the problem of "Int vs int" again. With your advice, I changed from "int" to "Int" in the f2 expression below and draw the graph

However, the "memory allocation failed" message appeared again after long time running. Did I understand something wrong?

Here is the expression I want to draw the 2D graph

f1:= d*exp(-(0.5*(u-s-k))^2-(0.5*(u-s-k)+t-u)^2+(0.5*(u-s-k))^2+(-d*k));

Hello everybody,

I have a quite complex function and I need to draw its 3 dimension plot. The function is :

I got a big problem with one kind of integral function. Now, I am using Maple 8 or Maple 11 to get some results from my research topic. However, when I took three times integral like :

f:= Int(exp(-t^2),t = 0 .. infinity)+Int(Int(2*Int(.1*exp(-.25*(u-s-k)^2)*exp(-(-.5*u-.5*s-.5*k+t)^2)*exp(.25*(u-s-k)^2)*exp(-.1*k),k = 0 .. u-s)*exp(-u^2)*u,u = s .. t),t = 0 .. infinity);

After that, I try to draw the grahp of the above equation.

plot(f,s=0..1);