Line Integral Examples;

> f1:=cos(t);

> f2:=sin(t);

> plot([f1,f2,t=0..Pi]);

> g:=2+f1^2*f2;

> int(g*sqrt(diff(f1,t)^2+diff(f2,t)^2),t=0..Pi);

A three dimensional example.

> f3:=t/Pi;

> with(plots):

> spacecurve([f1,f2,f3],t=0..Pi,axes=boxed);

> density:=1;

> wirelength:=int(density*sqrt(diff(f1,t)^2+diff(f2,t)^2+diff(f3,t)^2),t=0..Pi);

>