||'''Book'''|| Linear Algebra ||
 ||'''Author'''|| Gilbert Strang ||
 ||'''Edition'''||  ||

/* code_begins */

{{{
var('a,b,t,x,y,x1,y1,z')
x=a*cos(t)
y=b*sin(t)
x1=diff(x,t)
y1=diff(y,t)
z=1/2*integrate((x*y1-y*x1),(t,0,2*pi))
}}}

/* code_ends */

 * '''Solution by''': 
   * sneha,student,pec
   * divya,student,pec