Put x=f₁(t₁,t₂,t₃), y=f₂(t₁,t₂,t₃), z=f₃(t₁,t₂,t₃).  

The question is that: How to plot all points of form [x,y,z] with t₁ in [a₁,b₁], t₂ in [a₂,b₂], t₃ in [a₃,b₃].

Thank you.

Is it possible to stop simplifying the expressions automatically in Maple in the following case:

> 2*x-5>3*x-6;

Thank you.

Hello everyone !

I have a problem when I want to calculate the following multiple integration numerically:

>evalf(Int(exp(sum(x[i],i=1..6)^2),[seq(x[i]=-1..1,i=1..6)]));
  value(%);

It doesn't work. But when I replace sum(x[i],i=1..6)^2 with sum(x[i],i=1..6), it works. Is there any feasible solution to my problem ?

Thank you for reading !

Hello !!

I want to replace the word "assuming" with another word. I tried to write:

> as:=assuming;

> alias(as=assuming);

> `&as`:=proc(a,b) a assuming b; end;

The first two methods are not allowed. The last one doesn't work like "assuming".

Is there any solution to this problem ?