2011/10/30 achrzesz <[email protected]> > > > In Sage you need more steps. > Assuming that you need the exact and the approximate value: > > var('x y') > s=solve([x^2+y^2-4==0,x+y-1==0],[x,y]) > x0,x1=[sol[0].rhs() for sol in s] > assume(abs(x)<2) > ii=integrate(integrate(1,(y,1-x,sqrt(4-x^2))),(x,x0,x1)) > #print ii > print ii.n() > #3.31871699805750 > > (The integration can be done numerically) > > Andrzej Chrzeszczyk > > > Seems to work. Thanks!
Renan -- Renan Birck Pinheiro - Grupo de Microeletrônica <http://www.ufsm.br/gmicro>- Engenharia Elétrica <http://www.ufsm.br/cee>/UFSM <http://www.ufsm.br> http://renanbirck.blogspot.com / skype: renan.ee.ufsm -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
